| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Vehicle brake control systems | |
| #2 | Unspecified technologies | |
| #3 | Servomotors | |
| #4 | Vehicle drive control systems | |
| #5 | Pumps | |
| #6 | Vehicle transmission mounting | |
| #7 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Porter Gilbert E | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US2941368A | Compound master cylinder | |
| US2941366A | Assister unit for hydraulic control system | |
| US2770948A | Assister unit for hydraulic brake systems | |
| US2633001A | Assister for hydraulic brake systems | |
| US2360578A | Power brake | |
| US2324173A | Bellows | |
| US2318258A | Control mechanism for motor vehicles | |
| US2250033A | Brake operating mechanism | |
| US2094135A | Clutch operating means | |
| US2090152A | Clutch actuator | |
| US1174277A | Universal joint. |