| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 21 | |
| #2 | Canada | 11 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Furlong Francis A | 16 |
| #2 | Wetherbee Ashur U | 10 |
| #3 | Cunningham Arthur B | 2 |
| #4 | Ames James G | 2 |
| #5 | Furiong Francis A | 1 |
| #6 | Penfold Norman C | 1 |
| #7 | Dufour Raymond J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2246566A | Heating system | |
| US2241661A | Heating system | |
| US2182106A | Venting means for ranges or the like | |
| US2164512A | Heating system | |
| US2109262A | Combustion chamber | |
| US2160264A | Heater | |
| US2093239A | Heating apparatus | |
| US2022033A | Heating system | |
| US2115988A | Heating system | |
| US2164511A | Heating system | |
| US1991609A | Heating system | |
| US2012162A | Safety device | |
| US2098383A | Heating system | |
| US1919285A | Combustion chamber | |
| US1978518A | Method of combustion | |
| US1956857A | Gas burner | |
| US1978517A | Gas burner | |
| US1839516A | Boiler | |
| US1851745A | Method of combustion | |
| US1898799A | Gas burner |