| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 21 | |
| #2 | France | 1 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Gearing | |
| #2 | Unspecified technologies | |
| #3 | Wheelchairs and sledges | |
| #4 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ahlm Charles E F | 19 |
| #2 | Soule George M | 4 |
| Publication | Filing date | Title |
|---|---|---|
| GB330526A | Improvements in or relating to automobile transmission mechanism | |
| US1848278A | Transmission gearing | |
| US1787968A | Transmission-control mechanism | |
| US1696179A | Gear and clutch mechanism | |
| US1674083A | Transmission gearing | |
| US1674082A | Transmission gearing | |
| US1674072A | Transmission gearing | |
| US1720989A | Transmission-gear mechanism | |
| US1850089A | Transmission gearing | |
| US1720988A | Transmission gearing | |
| US1813376A | Transmission gearing | |
| US1696178A | Transmission gearing | |
| US1753398A | Transmission gearing | |
| US1620859A | Transmission gearing | |
| US1620857A | Transmission gearing | |
| US1620854A | Transmission gearing | |
| US1620858A | Transmission gearing | |
| US1620855A | Tranemission gearing | |
| US1620856A | Transmission gearing | |
| US1733769A | Transmission gearing |