| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Unspecified technologies | |
| #3 | Accessories for machine tools | |
| #4 | Machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hoffer James F | 14 |
| Publication | Filing date | Title |
|---|---|---|
| US2462500A | Compensator control for pumps | |
| US2496915A | Variable delivery pump | |
| US2431176A | Pump structure | |
| US2431175A | Pump structure | |
| US2408169A | Level work supporting structure | |
| US2393773A | Reaction ring | |
| US2383060A | Fluid pump | |
| US2383059A | Fluid pump | |
| CA455401A | Compensator control for pumps | |
| CA434231A | Fluid pump | |
| CA437158A | Fluid pump | |
| CA437157A | Reaction ring | |
| CA447172A | Pump structure | |
| CA452712A | Variable delivery pump |