| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 25 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Control | |
| #3 | Machines | |
| #4 | Machine tools | |
| #5 | Mechanical elements | |
| #6 | Agriculture |
| # | Technology | |
|---|---|---|
| #1 | Controlling combustion | |
| #2 | Systems controlling non-electric variables | |
| #3 | Burners | |
| #4 | Fluid heaters | |
| #5 | Unspecified technologies | |
| #6 | Harvesting | |
| #7 | Metal wire processing | |
| #8 | Venting or aerating devices | |
| #9 | Spraying devices | |
| #10 | Ignition and extinguishing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Humphrey Herbert S | 30 |
| Publication | Filing date | Title |
|---|---|---|
| US1692838A | Power lawn mower | |
| US1581124A | Thermostat | |
| US1590516A | Valve mechanism | |
| US1571950A | Sprinkler | |
| US1583834A | Check valve | |
| CA168640A | Coil winding machine | |
| CA164269A | Water heater | |
| CA161950A | Water heater casing | |
| US1251035A | Water-heater. | |
| US1167696A | Water-heater. | |
| US1165779A | Coil-winding machine. | |
| US1168504A | Water-heater. | |
| US1129293A | Water-heater. | |
| US1033103A | Water-heater. | |
| US1033896A | Water-heater. | |
| US1007699A | Valve mechanism. | |
| US928311A | Water-heater. | |
| US1006556A | Water-heater. | |
| US942831A | Gas-burner. | |
| US928310A | Water-heater. |