| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Thermal processes | |
| #4 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Venting or aerating devices | |
| #3 | Water-closets with flushing devices | |
| #4 | Fluid heaters | |
| #5 | Domestic heating systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Donnelly Edward F | 11 |
| #2 | Mccarthy Thomas J | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US2294163A | Hot water heating system | |
| US2206601A | Relief valve for hot water tanks and heating systems | |
| US1767056A | Vacuum-radiator valve | |
| US1670764A | Relief valve for kitchen boilers and the like | |
| US1667590A | Relief valve | |
| US1627840A | Vacuum valve | |
| US1612857A | Ball-cock valve | |
| US1552685A | Hot-water temperature and pressure relief device | |
| US1501318A | Flush valve | |
| US1299692A | Flush-valve. | |
| CA291321A | Relief valve |