| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 10 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Transport | |
| #3 | Mechanical elements | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Motor vehicles | |
| #3 | Clutches and brakes | |
| #4 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rauch John D | 16 |
| #2 | Haines Homer B | 4 |
| #3 | Huston William M | 3 |
| #4 | Reid William L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1963408A | Detachable extension for tractor trucks | |
| US1986853A | Dragline bucket | |
| US1966759A | Power shovel | |
| US1906415A | Tractor truck | |
| US1936938A | Tractor truck for power shovels | |
| US1942475A | Detachable extension for tractor trucks | |
| US1873479A | Clutch | |
| US1813864A | Dipper handle | |
| US1796958A | Power dipper trip | |
| US1717892A | Clutch mechanism | |
| US1907442A | Hydraulic power shovel | |
| US1733753A | Power shovel | |
| US1765739A | Continuous-tread truck | |
| CA312845A | Clutch mechanism | |
| CA319512A | Tractor truck for power shovels | |
| CA311963A | Power shovel | |
| CA322321A | Tractor truck brake | |
| CA327670A | Power shovel | |
| CA311962A | Power shovel | |
| CA320862A | Clutch |