| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 54 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Transport | |
| #4 | Agriculture | |
| #5 | Mechanical elements | |
| #6 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Elmer Mccormick | 19 |
| #2 | Mccray Harold E | 11 |
| #3 | Merlin Hansen | 6 |
| #4 | Worthington Wayne H | 6 |
| #5 | Cade John E | 5 |
| #6 | Witry Louis W | 4 |
| #7 | Liggett John T | 2 |
| #8 | Mccormick Elmer | 2 |
| #9 | Johnson Jay D | 2 |
| #10 | Hall Robert K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2410514A | Crankcase ventilating system | |
| US2415498A | Hydraulic mechanism | |
| US2403422A | Power lift | |
| US2340474A | Hydraulic mechanism | |
| US2309195A | Pump and valve assembly | |
| US2309199A | Tractor transmission | |
| US2344156A | Hydraulic power lift | |
| US2311828A | Fuel control device | |
| US2311827A | Fuel control device | |
| US2257614A | Internal combustion engine | |
| US2304365A | Tractor | |
| US2236803A | Governor control mechanism | |
| US2318276A | Engine lubricating system | |
| US2222274A | Fuel system for internal combustion engines | |
| US2273068A | Transmission | |
| US2169449A | Tractor | |
| US2302637A | Hydraulic power lift | |
| US2108346A | Tractor wheel | |
| US2159283A | Governor control mechanism | |
| US2057935A | Tractor |