| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Control | |
| #4 | Engines, pumps and turbines | |
| #5 | Mechanical elements | |
| #6 | Chemical engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schoerner Rudolph T | 7 |
| #2 | Hencken Harold G | 3 |
| #3 | Williams Burdell S | 2 |
| #4 | Hazen White John | 2 |
| #5 | White John H | 2 |
| #6 | Grosvenor Jr William M | 2 |
| #7 | Rutschi Karl | 1 |
| #8 | Blanding Robert L | 1 |
| #9 | Wolanski Theodore J | 1 |
| #10 | Joseph Balter | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3019986A | Fluid mixing valve | |
| US2920575A | Pump | |
| US2972355A | Vent valve with hydroscopic discs therein | |
| US2823693A | Automatic vent valve | |
| US2775348A | Filter with backwash cleaning | |
| US2722942A | Automatic vent valve | |
| US2672878A | Automatic vent valve | |
| US2721706A | Heating apparatus | |
| US2713973A | Heating systems | |
| US2751199A | Heat exchanger | |
| US2656981A | Heater fitting and connection | |
| US2684686A | Control valve | |
| US2654385A | Automatic hygroscopic type air vent | |
| US2601216A | Automatic air valve | |
| US1717490A | Water heater | |
| CA617765A | Electrical motor pump unit |