| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Thermal processes | |
| #4 | Environmental technology |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Venting or aerating devices | |
| #3 | Air-conditioning | |
| #4 | Domestic stoves | |
| #5 | Pipes | |
| #6 | Combustion residues removal |
| # | Name | Total Patents |
|---|---|---|
| #1 | Skuttle John L | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2052850A | Valve attachment for humidifier pans | |
| US1982550A | Flush valve mechanism | |
| US1952000A | Water supply regulator for humidifiers | |
| US1686296A | Automatic water-control valve | |
| US1791385A | Pipe tap | |
| US1584481A | Furnace-radiator cleaner | |
| US1384493A | Gas-heater | |
| US1368364A | Float-valve | |
| CA180796A | Float valve | |
| CA168520A | Fluid valve | |
| US1150709A | Automatic water control for furnace air-moisteners. | |
| CA362337A | Humidifier regulator | |
| CA311230A | Water control valve | |
| CA229355A | Float valve | |
| CA362338A | Flush valve mechanism |