| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 22 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Packaging and shipping | |
| #3 | Machines | |
| #4 | Mechanical elements | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Unspecified technologies | |
| #3 | Motor vehicles | |
| #4 | Cranes | |
| #5 | Winches | |
| #6 | Clutches and brakes | |
| #7 | Unspecified technologies | |
| #8 | Pipes | |
| #9 | Elevators and escalators | |
| #10 | Construction of roads |
| # | Name | Total Patents |
|---|---|---|
| #1 | White Fred L | 15 |
| #2 | Barnhart Harry J | 6 |
| #3 | Mclean Leland O | 3 |
| #4 | Beicher Earl I | 1 |
| #5 | Owens Clifford A | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2774484A | Gantry | |
| US2602551A | Micrometric control for boom hoisting means | |
| US2518964A | Portable self propelled excavator | |
| US2420991A | Portable excavator | |
| US2420990A | Portable excavator | |
| US2408327A | Fluid pressure clutch mechanism | |
| US2395239A | Pressure fluid clutch | |
| US2377285A | Hoisting brake control | |
| US2355252A | Control system for excavators | |
| US2344796A | Boom hoist | |
| US2370360A | Pressure fluid clutch | |
| US2280329A | Excavator | |
| US2308137A | Power transmitting coupling | |
| US2279853A | Portable hoist | |
| US2254192A | Portable excavator | |
| US2127485A | Road roller | |
| US1579499A | Track links for steam-shovel structure | |
| US1646781A | Steam shovel | |
| US1639421A | Steam shovel | |
| US1582569A | Vehicle structure |