| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 27 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Gearing | |
| #3 | Clutches and brakes | |
| #4 | Preparing clay | |
| #5 | Motor vehicles | |
| #6 | Vehicle transmission mounting | |
| #7 | Mechanical control devices | |
| #8 | Vehicle suspension arrangements | |
| #9 | Cyclones |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chris Gerst | 27 |
| #2 | Keller Harold C | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2932208A | Counterrotating and steering transmission | |
| US2912872A | Counterrotating transmission | |
| US2866350A | Transmission | |
| US2880834A | Hydraulically actuated multiple disc clutch | |
| US2804780A | Power transmission | |
| US2866360A | Power transmission | |
| US2855807A | Transmission | |
| US2802542A | Axle housing construction for vehicle drive wheels | |
| US2772582A | Transmission | |
| US2764898A | Transmission | |
| US2639128A | Mixer closure | |
| US2646262A | Discharge chute mounting for concrete mixers | |
| US2624557A | Power drive arrangement for concrete mixers | |
| US2741130A | Transmission | |
| US2633754A | Transmission | |
| US2600108A | Power takeoff | |
| US2619208A | Power take-off | |
| US2556034A | Drive arrangement | |
| US2546063A | Transmission | |
| US2586220A | Fluid operated clutch |