| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Electrical machinery and energy | |
| #5 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Clutches and brakes | |
| #2 | Rotary-pistons | |
| #3 | Parachutes | |
| #4 | Non-portable lighting devices | |
| #5 | Unspecified technologies | |
| #6 | Vehicle transmission mounting | |
| #7 | Positive-displacement engines | |
| #8 | Lubricating | |
| #9 | Aeroplanes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilkin George W | 12 |
| #2 | Kee John P | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2163652A | Hydraulic motor | |
| US2149326A | Variable capacity gear pump | |
| US1720939A | Flying machine | |
| US1646436A | Light shade for headlights | |
| US1557127A | Oil can | |
| US1344107A | Differential | |
| US1372260A | Auxiliary balloon and inflating-tank therefor | |
| US1330506A | Transmission-clutch for motor-vehicles | |
| US1300316A | Power-transmission means. | |
| CA460027A | Hydraulic power mechanism | |
| CA389848A | Gear pump | |
| CA393198A | Hydraulic motor |