| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 33 | |
| #2 | United Kingdom | 3 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Chemical engineering | |
| #3 | Machines | |
| #4 | Engines, pumps and turbines | |
| #5 | Transport | |
| #6 | Mechanical elements | |
| #7 | Environmental technology | |
| #8 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Dredging | |
| #2 | Separating solids using liquids | |
| #3 | Unspecified technologies | |
| #4 | Gearing | |
| #5 | Motor vehicles | |
| #6 | Cooling of machines | |
| #7 | Machines | |
| #8 | Load transportation vehicles | |
| #9 | Combustion residues removal | |
| #10 | Sawing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Marcus Lothrop | 8 |
| #2 | Harris Robert L | 7 |
| #3 | Macaulay Walter B | 6 |
| #4 | Von Bolhar Edgar | 5 |
| #5 | Clark Robert S | 1 |
| #6 | Storsand Bjorn R | 1 |
| #7 | Johnson Alfred C | 1 |
| #8 | Emil Gruber Ralph | 1 |
| #9 | Stremel Raymond A | 1 |
| #10 | Wilbur Hess Cecil | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB780404A | Improvements relating to rear dump wagons | |
| US2713329A | Steam engine | |
| US2751096A | Rear dump wagon | |
| US2772577A | Dredge drive | |
| US2699954A | Tractor chassis construction and independently mounted steering wheels thereon | |
| US2690165A | Steam engine with cam actuated valves | |
| US2677463A | Ore jig dewatering device | |
| US2737817A | Water pump | |
| US2698686A | Ore jig | |
| US2591933A | Steam engine having a unitary valve actuator | |
| US2645210A | Steam generator | |
| US2586224A | Fuel burner system | |
| US2596968A | Steam power plant | |
| US2547185A | Shaft seal | |
| US2477221A | Ladder roller mounting | |
| US2489635A | Nugget saver for dredges | |
| US2528195A | Dredge digging structure | |
| US2488833A | Stacker drive | |
| US2574622A | Clutch wear compensator | |
| US2489630A | Sand wheel |