| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 6 | |
| #2 | Germany | 1 | |
| #3 | United Kingdom | 1 | |
| #4 | Japan | 1 | |
| #5 | Netherlands | 1 | |
| #6 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Gearing | |
| #3 | Clutches and brakes | |
| #4 | Marine propulsion | |
| #5 | Cyclically operating valves | |
| #6 | Vehicle transmission mounting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Benson C | 3 |
| #2 | Benson Carl Ivar Jr | 1 |
| #3 | Benson Jr Carl I | 1 |
| #4 | Kaaru Ai Benson Jiyunia | 1 |
| #5 | Benson Jr C I | 1 |
| #6 | Benson Carl I Jr | 1 |
| #7 | Benson Jun Carl I | 1 |
| #8 | Rapoza James | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4138006A | Power transmission of the interleaved, multiple friction plate clutch type | |
| US3793900A | Marine propulsion unit | |
| US3735644A | Reversible power transmission | |
| US3724620A | Releaseable power transmitting device of the friction plate type | |
| US3636909A | Marine power transmission | |
| US3613482A | Forward-reverse selector with starter switch |