| Fiala | Joseph | framing clip | 1260531 | Cedar Rapids | 1918 |
| Lenders | Adolph | method of curing starch | 1260983 | Cedar Rapids | 1918 |
| Brown | James | internal combustion engine | 1261354 | Cedar Rapids | 1918 |
| Brown | James | exhaust valve actuating means for internal combustion engines | 1261355 | Cedar Rapids | 1918 |
| Lenders | Adolph | producing dustless starch | 1272682 | Cedar Rapids | 1918 |
| Hruska | Frank | book | 1288596 | Cedar Rapids | 1918 |
| Marshall | Frank | grain shocker | 1273517 | Central City | 1918 |
| Moore | Claude | spectacles | 1289227 | Cedar Rapids | 1918 |
| Chadima | Frank | apparatus for pasteurizing cooling, and ripening milk, cream, and other liquids | 14512 | Cedar Rapids | 1918 |
| Lenders | Adolph | size and making same | 1253397 | Cedar Rapids | 1918 |
| Velde | Ernest | rock pulverizer | 1253547 | Cedar Rapids | 1918 |
| Velde | Ernest | pipe vise bench | 1278401 | Cedar Rapids | 1918 |
| Langworthy | Solon | automatic vaporizer | 1278946 | Cedar Rapids | 1918 |
| Sublisky | Henry | film holder | 1279607 | Cedar Rapids | 1918 |
| Denning | Joseph | differential gear mechanism | 1279670 | Cedar Rapids | 1918 |
| Denning | Joseph | propelling mechanism for tractors | 1279671 | Cedar Rapids | 1918 |
| Anderson | Fred | mixing machine | 1255376 | Cedar Rapids | 1918 |
| Leverich | Sylvester | wire grip | 1312635 | Marion | 1919 |
| John | Frank | hand harrow | 1304058 | Cedar Rapids | 1919 |
| Long | James | sash lock | 1304334 | Cedar Rapids | 1919 |
| Sopousek | Joseph | combination lawn edge trimmer | 1313866 | Cedar Rapids | 1919 |
| Lenders | Adolph | manufacturing dextrin, gums, and modified starches | 1305291 | Cedar Rapids | 1919 |
| Anthony | Ralph | grate attachment | 1306940 | Cedar Rapids | 1919 |
| Janecek | Adolf | spark plug protector | 1316098 | Ely | 1919 |
| Taylor | Edwin | vehicle signaling device | 1316121 | Cedar Rapids | 1919 |
| Kelly | William | tire shoe | 1307445 | Cedar Rapids | 1919 |
| Chadima | Frank | churn recoil stop | 1290084 | Cedar Rapids | 1919 |
| Starman | Joseph | cell case machine | 1290816 | Cedar Rapids | 1919 |
| Arduser | Chris | tire shoe | 1316757 | Coggon | 1919 |
| Bersley | Homer | railway crossing signal | 1307998 | Coggon | 1919 |
| Chadima | Frank | brake | 1291402 | Cedar Rapids | 1919 |
| Griffith | Euclid | automatic hog feeder | 1308901 | Springville | 1919 |
| Opie | Leslie | means for saving radiator overflow | 1317723 | Cedar Rapids | 1919 |
| Wells | Clark | flush valve | 1309230 | Cedar Rapids | 1919 |
| Stary | Emil | internal combustion engine | 1318619 | Cedar Rapids | 1919 |
| Evans | Cleve | garden seed planter | 1294641 | Cedar Rapids | 1919 |
| Revis | James | non-loosening railway spike | 1319618 | Cedar Rapids | 1919 |
| Van Kuren | Stephen | apparatus for pasteurizing cooling, and ripening milk cream, and other liquids | 1319916 | Cedar Rapids | 1919 |
| Loufek | Frank | machine for setting wheels | 1296198 | Cedar Rapids | 1919 |
| Starman | Joseph | cell case machine | 1296887 | Cedar Rapids | 1919 |
| Van Kuren | Stephen | safety guard for factory churns | 1321575 | Cedar Rapids | 1919 |
| Andrew | Harve | piston ring | 1356183 | Marion | 1920 |
| Eyles | Anton | tempo-control device | 1328870 | Cedar Rapids | 1920 |
| Long | Charles | pocket guard | 1343371 | Cedar Rapids | 1920 |
| Hruska | Frank | cabinet | 1330267 | Cedar Rapids | 1920 |
| Lockett | Mary | spark and soot collector | 1330272 | Marion | 1920 |
| Wicke | Joseph | water level and temperature indicator for automobile radiators | 1330457 | Cedar Rapids | 1920 |
| Slauson | Stephen | gate and hinge construction | 1345559 | Cedar Rapids | 1920 |
| Swanson | August | stepladder | 1347600 | Cedar Rapids | 1920 |
| Shores | George | design for a medicinal tablet | 56478 | Cedar Rapids | 1920 |
| Dinwiddie | John | paper clip | 1334233 | Cedar Rapids | 1920 |
| Ranc | Frank | screen or storm sash fastener | 1334922 | Cedar Rapids | 1920 |
| Christle | William | screen or storm sash fastener | 1334922 | Cedar Rapids | 1920 |
| Benedict | James | hand cart | 1350058 | Cedar Rapids | 1920 |
| Hruska | Frank | binder tray | 1358853 | Cedar Rapids | 1920 |
| Heald | Clarence | artificial respirator | 1337255 | Cedar Rapids | 1920 |
| Wing | Charles | wind | 1395074 | Cedar Rapids | 1921 |
| Henry | Ernest | automatic furnace damper controller | 1395709 | Cedar Rapids | 1921 |
| Williams | Allen | pedal for operating accelerators of automobiles | 1395781 | Cedar Rapids | 1921 |
| Lindsay | Kenneth | saw holder | 1380814 | Cedar Rapids | 1921 |
| Mrazek | Joseph | can capping machines | 1366742 | Cedar Rapids | 1921 |
| Wagner | Clinton | engine radiator | 1381604 | Cedar Rapids | 1921 |
| Fulkerson | Joseph | bag cleaner | 1397417 | Marion | 1921 |
| Stuart | LeRoy | bag cleaner | 1397417 | Cedar Rapids | 1921 |
| Bemis | John | ledger tray | 1381902 | Cedar Rapids | 1921 |
| Baker | William | tire remover | 1369770 | Cedar Rapids | 1921 |
| Baker | James | tire remover | 1369770 | Cedar Rapids | 1921 |
| Hrbek | Jan | marginal indexing | 1383120 | Cedar Rapids | 1921 |
| Condon | David | emergency vault and safe lock | 1398628 | Kenwood Park | 1921 |
| Benedict | James | rope grip | 1399182 | Cedar Rapids | 1921 |
| Vesely | Stanley | shock absorber | 1384545 | Cedar Rapids | 1921 |
| Waggoner | Melancthon | therapeutic apparatus | 1399676 | Cedar Rapids | 1921 |
| Van Kuren | Stephen | churn timer | 1371454 | Cedar Rapids | 1921 |
| Van Kuren | Stephen | churn timer | 1371455 | Cedar Rapids | 1921 |
| Leonard | Joseph | sectional tent stove | 1371794 | Cedar Rapids | 1921 |
| Matyk | William | cap | 1386890 | Cedar Rapids | 1921 |
| Sheaver | Joseph | wrench | 1388029 | Cedar Rapids | 1921 |
| Smouse | Will | foldable box | 1373365 | Cedar Rapids | 1921 |
| Dimock | Richard | wrench | 1388029 | Cedar Rapids | 1921 |
| Wyskocil | George | wrench | 1388029 | Cedar Rapids | 1921 |
| Minehart | Irvin | door catch | 1374215 | Coggon | 1921 |
| Petersen | Arnold | arm for lighting fixtures | 60626 | Cedar Rapids | 1922 |
| Petersen | Arnold | arm for lighting fixtures | 60627 | Cedar Rapids | 1922 |
| Petersen | Arnold | arm for lighting fixtures | 60628 | Cedar Rapids | 1922 |
| Moore | Claude | pneumatic cap | 1426402 | Cedar Rapids | 1922 |
| Petersen | Arnold | chandelier | 60629 | Cedar Rapids | 1922 |
| Connolly | Thomas | lawn mower sharpener | 1426548 | Cedar Rapids | 1922 |
| Elgin | John | tire rack | 1410740 | Cedar Rapids | 1922 |
| Wagner | Clinton | sheet metal shears | 1410972 | Cedar Rapids | 1922 |
| Tokheim | John | power transmitting mechanism | 1426843 | Cedar Rapids | 1922 |
| Fishel | Frederick | ensilage tamping apparatus | 1411428 | Marion | 1922 |
| Keister | Perry | railway weeder and reshouldering machine | 1429680 | Cedar Rapids | 1922 |
| Ford | Benson | pump handle | 1412611 | Marion | 1922 |
| Laird | George | animal feed and making the same | 1432295 | Cedar Rapids | 1922 |
| Goodyear | Lloyd | loose leaf binder | 1415834 | Cedar Rapids | 1922 |
| Cizek | Fred | combined screen and storm door | 1415920 | Cedar Rapids | 1922 |
| Murray | Frederick | milk can | 1432888 | Cedar Rapids | 1922 |
| Wallick | George | rotatable pump for cooling systems for automobiles | 1433762 | Mount Vernon | 1922 |
| Michalicek | Fred | musical toy | 1417343 | Ely | 1922 |
| Lenders | Adolph | manufacture of corn starch and products therefrom | 1417467 | Cedar Rapids | 1922 |
| Allen | Paul | manufacture of corn starch and products therefrom | 1417467 | Cedar Rapids | 1922 |
| Nemecek | Milo | can capping machine | 1435415 | Cedar Rapids | 1922 |
| Stroppel | Rudolf | can capping machine | 1435415 | Cedar Rapids | 1922 |
| Collins | Donley | self measuring visible liquid pump | 1418129 | Cedar Rapids | 1922 |
| Husak | Milvoy | engine connecting rod test gauge | 1436104 | Cedar Rapids | 1922 |
| Pickering | Angeline | hen coop | 1436109 | Viola | 1922 |
| Bohac | Leonard | apparatus for opening telephone circuits at a distance | 1436570 | Cedar Rapids | 1922 |
| Robins | Howard | pipe wrench | 1420058 | Cedar Rapids | 1922 |
| Dains | Frank | automobile bumper | 1459365 | Cedar Rapids | 1923 |
| Anderson | Charles | piston | 1444942 | Cedar Rapids | 1923 |
| Stockey | Daniel | trenching machine | 1460117 | Cedar Rapids | 1923 |
| Van Kuren | Stephen | ice cream freezer | 1478073 | Cedar Rapids | 1923 |
| O'Brien | John | pump coupling | 1478453 | Coggon | 1923 |
| Slauson | Stephen | automatic clamp bolt | 1461882 | Cedar Rapids | 1923 |
| Wernimont | Frank | metal basket corrugating machine | 1462457 | Cedar Rapids | 1923 |
| Grassfield | John | tire tool | 1448211 | Paris | 1923 |
| Pearson | Kent | animal trap | 1463091 | Marion | 1923 |
| Rooke | Tom | tinsmith's furnace | 1448944 | Cedar Rapids | 1923 |
| Walters | Charles | carpenter's square | 1463605 | Marion | 1923 |
| Knapp | Delbert | storage structure | 1449232 | Cedar Rapids | 1923 |
| Dvorak | John | bacon stringing machine | 1450667 | Cedar Rapids | 1923 |
| Weymer | Benjamin | gate | 1451247 | Cedar Rapids | 1923 |
| De Cew | Charles | band saw machine | 1466090 | Cedar Rapids | 1923 |
| Hirst | William | band saw machine | 1466090 | Cedar Rapids | 1923 |
| Gardner | Samuel | auxiliary tie rod | 1452554 | Cedar Rapids | 1923 |
| Brown | Clarence | typewriting machine | 1492959 | Cedar Rapids | 1924 |
| Vesely | Stanley | automobile jack | 1510362 | Cedar Rapids | 1924 |
| Hubbard | Milton | labeling machine | 1510552 | Cedar Rapids | 1924 |
| Klepach | John | gravel cleaner | 1510682 | Cedar Rapids | 1924 |
| Klepach | John | gravel cleaner | 1510683 | Cedar Rapids | 1924 |
| Klepach | John | gravel cleaner | 1510684 | Cedar Rapids | 1924 |
| Boyer | Frank | bridle bit | 1494884 | Central City | 1924 |
| Kissich | Peter | automobile signal | 1511283 | Cedar Rapids | 1924 |
| Altmyer | John | hat hanger | 1511864 | Cedar Rapids | 1924 |
| Hewit | James | can capping machine | 1511966 | Cedar Rapids | 1924 |
| Bagby | Ralph | ice cream freezer | 1512665 | Cedar Rapids | 1924 |
| Light | Lon | door hanger structure | 1480731 | Cedar Rapids | 1924 |
| Wilkins | Norman | door hanger structure | 1480731 | Cedar Rapids | 1924 |
| Luedke | Julius | percolator attachment | 1497522 | Cedar Rapids | 1924 |
| McArthur | Finley | passenger elevator | 1515059 | Cedar Rapids | 1924 |
| Vesely | Stanley | shock absorber | 1500351 | Cedar Rapids | 1924 |
| Hagerman | Ralph | nozzle for paint spraying | 1500384 | Cedar Rapids | 1924 |
| Stutzke | Richard | manufacture of products from starch | 1516512 | Cedar Rapids | 1924 |
| Slauson | Stephen | connecting rod bolt | 1483317 | Cedar Rapids | 1924 |
| Ewing | Frank | gasoline vender | 1501556 | Cedar Rapids | 1924 |
| Bagley | Fred | tank heater | 1502008 | Cedar Rapids | 1924 |
| Stroppel | Rudolph | can capping machine | 1502869 | Cedar Rapids | 1924 |
| Nemecek | Milo | can capping machine | 1502869 | Cedar Rapids | 1924 |
| Bland | Charles | touring car | 1485550 | Cedar Rapids | 1924 |
| Beenk | Herbert | telephone attachment | 1541679 | Cedar Rapids | 1925 |
| Cline | Charles | store room rack | 1541686 | Marion | 1925 |
| Greedy | Edward | portable bookrack | 1561156 | Cedar Rapids | 1925 |
| Haskell | Willis | jet regulator for gas cocks | 1525733 | Cedar Rapids | 1925 |
| Vesely | Stanley | lifting jack | 1562015 | Cedar Rapids | 1925 |
| Vesely | Stanley | vehicle jack | 1562016 | Cedar Rapids | 1925 |
| Fiala | Earl | map folding machine | 1563696 | Cedar Rapids | 1925 |
| Dirks | Henry | cotter pin puller | 1563840 | Marion | 1925 |
| Stary | Emil | gas engine | 1543803 | Cedar Rapids | 1925 |
| Durey | Carl | waste valve controlling device | 1544088 | Cedar Rapids | 1925 |
| White | Thelo | bag cleaner and sacker | 1544709 | Cedar Rapids | 1925 |
| King | Claude | mechanical stoker regulator | 1566102 | Cedar Rapids | 1925 |
| Chandler | William | machine aligning apparatus | 1546968 | Cedar Rapids | 1925 |
| House | Luther | clean out elbow | 1528252 | Viola | 1925 |
| Crosby | Frederic | door jack | 1530036 | Coggon | 1925 |
| Bear | William | lantern hanger | 1553212 | Cedar Rapids | 1925 |
| Dalton | Edward | screen for rock crushers | 1553693 | Cedar Rapids | 1925 |
| Jensen | Earl | screen for rock crushers | 1553693 | Cedar Rapids | 1925 |
| Widmer | John | manufacture of conversion products of starch | 1578568 | Cedar Rapids | 1926 |
| Klassen | Arthur | sun and light visor | 1600594 | Cedar Rapids | 1926 |
| Chapman | Earl | curtain drying stretcher | 1580958 | Kenwood Park | 1926 |
| Hanson | Hans | valve grinding chuck | 1582010 | Cedar Rapids | 1926 |
| Widmer | John | purification of starch | 1582537 | Cedar Rapids | 1926 |
| Vesely | Stanley | vehicle spring rebound arrester | 1603564 | Cedar Rapids | 1926 |
| Widmer | John | manufacture of starch | 1585452 | Cedar Rapids | 1926 |
| Kelsey | Louis | safety apparatus for window cleaners | 1604916 | Cedar Rapids | 1926 |
| Fulkerson | Samuel | brick carrier | 1586475 | Cedar Rapids | 1926 |
| Schondelmayer | Harvey | brick carrier | 1586475 | Marion | 1926 |
| Choate | Roy | snow plow | 1606057 | Cedar Rapids | 1926 |
| Miller | Ora | window barrier | 1606092 | Cedar Rapids | 1926 |
| Bagley | Fred | air intake agitator for internal combustion engines | 1606916 | Cedar Rapids | 1926 |
| Hawussler | Bennet | whirlgig | 1607617 | Marion | 1926 |
| Slauson | Stephen | take up device | 1615145 | Cedar Rapids | 1927 |
| King | William | label holder | 1615332 | Cedar Rapids | 1927 |
| Hargravae | Fred | planing or scarifying mechanism | 1634144 | Cedar Rapids | 1927 |
| Blomquist | Hjalmer | combined pressure reducing and gas flow regulating valve | 1651507 | Cedar Rapids | 1927 |
| Miller | George | conbined pressure reducing and gas flow regulating valve | 1651507 | Cedar Rapids | 1927 |
| Schimmelpfennig | John | combination woodworking machine | 1619158 | Cedar Rapids | 1927 |
| Wagner | Clinton | sheet metal shear guide | 1653936 | Cedar Rapids | 1927 |
| Charter | Thomas | hose repair clamp | 1619287 | Cedar Rapids | 1927 |
| Hargrave | Fred | road building machine | 1619614 | Cedar Rapids | 1927 |
| Rabus | George | pencil printing press | 1638127 | Cedar Rapids | 1927 |
| Bunger | Edward | tire chain | 1620517 | Cedar Rapids | 1927 |
| Moore | Ira | railway crossing gate | 1638502 | Cedar Rapids | 1927 |
| Ely | Thomas | railway crossing gate | 1638502 | Cedar Rapids | 1927 |
| Bain | Benjamin | seed corn drying rack | 1638651 | Cedar Rapids | 1927 |
| Hetherington | Edwin | child's teeter board | 1640150 | Cedar Rapids | 1927 |
| Henry | Leo | child's teeter board | 1640150 | Cedar Rapids | 1927 |
| Furman | William | aviator's suit | 1640270 | Troy Mills | 1927 |
| Hruska | Frank | loose leaf binder | 1623314 | Cedar Rapids | 1927 |
| Bagby | Ralph | flush valve for pasteurizers | 1624572 | Cedar Rapids | 1927 |
