| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 4 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Vehicle suspension arrangements | |
| #2 | Motor vehicles | |
| #3 | Vehicle brake control systems | |
| #4 | Cooling of machines | |
| #5 | Convertible vehicles | |
| #6 | Vehicle wheels | |
| #7 | Vehicle connections |
| # | Name | Total Patents |
|---|---|---|
| #1 | Townsend Roy C | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2482564A | Guide wheel suspension for roadrail vehicles | |
| US2431626A | Short turn trailer vehicle | |
| US2414248A | Vehicle trailer hitch | |
| US2307811A | Brake mechanism | |
| US2277616A | Structural beam | |
| US2316374A | Vehicle supporting truck | |
| US2337073A | Spring mounting | |
| US2246609A | Vehicle truck assembly | |
| US2155156A | Trailer axle | |
| US2204108A | Trailer | |
| CA170353A | Traction engine | |
| US1172075A | Gas traction-engine. | |
| CA414099A | Vehicle truck assembly | |
| CA418669A | Vehicle spring mounting | |
| CA414992A | Brake mechanism |