| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Engines, pumps and turbines | |
| #3 | Machines | |
| #4 | Environmental technology | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Internal-combustion piston engines | |
| #2 | Clutches and brakes | |
| #3 | Gearing | |
| #4 | Unspecified technologies | |
| #5 | Climate change mitigation in transportation | |
| #6 | Cycle brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Trebert Henry L F | 11 |
| Publication | Filing date | Title |
|---|---|---|
| US1796735A | Internal-combustion engine having oscillating pistons | |
| US1833448A | Brake mechanism | |
| US1785057A | Brake mechanism | |
| US1712316A | Hydraulic brake | |
| CA155410A | Rotary gas engine | |
| CA132542A | Internal combustion engine | |
| US1145631A | Valve mechanism. | |
| US980366A | Internal-combustion engine. | |
| US765445A | Variable-speed mechanism. | |
| US764644A | Variable-speed-transmission gearing. | |
| US671409A | Brake. |