| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 137/198 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 540,760 | Jun. 11, 1895 | S. Sawyer | Automatic air and vacuum valve | radiators | |
| 2,208,181 | Jul. 16, 1940 | L.W. Eggleston | Vacuum Air Valve | gas and liquid valves | |
| 2,299,473 | Oct. 20, 1942 | L.W. Eggleston | Valve | gas and liquid valves | |