| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | United Kingdom | 2 | |
| #3 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Transport | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Unspecified technologies | |
| #3 | Motor vehicles | |
| #4 | Clutches and brakes | |
| #5 | Vehicle transmission mounting |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chris Gerst | 9 |
| #2 | Gerst Chris | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2982141A | Steering axle and transmission | |
| US2972901A | Forward and reverse reduction transmission | |
| GB878930A | Improvements in or relating to counterrotating gear transmission | |
| US2982151A | Counterrotating transmission and steering axle | |
| US2958231A | Multi-speed forward and reverse steering type transmission and axle | |
| US2815836A | Carrier-controlled planetary gear unit | |
| GB604006A | Clutch structure | |
| US2421493A | Clutch structure | |
| US2443313A | Transmission | |
| US2389847A | Power take-off | |
| US2401864A | Clutch structure |