| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Thermal processes | |
| #4 | Machine tools | |
| #5 | Mechanical elements | |
| #6 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Non-positive-displacement pumps | |
| #2 | Unspecified technologies | |
| #3 | Burners | |
| #4 | Making gears or toothed racks | |
| #5 | Gearing | |
| #6 | Steam turbines | |
| #7 | Marine propulsion |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schellens Christopher A | 13 |
| #2 | Sherman Arthur L | 2 |
| #3 | Trowbridge Arthur T | 2 |
| #4 | Schellens Eugene L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2782002A | Nozzle structure for fluid-driven turbines | |
| US2661698A | Centrifugal pump | |
| US2700344A | Centrifugal hydraulic pump | |
| US2632596A | Turbine driven pump | |
| US2425958A | Fluid-driven pump control | |
| US2059613A | Gear cutting machine | |
| US2034210A | Oil burner | |
| US2059612A | Gearing | |
| US1649745A | Oil burner | |
| US1437913A | Reduction gearing | |
| CA295010A | Superheater | |
| CA264707A | Oil burner | |
| CA457766A | Fluid-driven pump control |