| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 3 | |
| #3 | Germany | 2 | |
| #4 | France | 2 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Clutches and brakes | |
| #3 | Unspecified technologies | |
| #4 | Vehicle drive control systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Irvin Hupp | 4 |
| #2 | Hupp Irvin | 2 |
| #3 | Schultze Helmuth A | 1 |
| #4 | Hupp Irwin | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1663026A | Transmission mechanism | |
| US1474365A | Combined clutch and brake mechanism | |
| DE401221C | Gear change transmission, especially for motor vehicles | |
| US1431401A | Flexible coupling | |
| GB164633A | Improvements in transmission mechanism | |
| DE401516C | Switching device for gear change transmissions of motor vehicles | |
| US1420706A | Differential mechanism | |
| US1413987A | Clutch mechanism | |
| CA221991A | Coupling means | |
| CA202012A | Flexible coupling | |
| CA217027A | Transmission mechanism |