| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 251/356 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 15,030 | Jun. 03, 1856 | H.R. Worthington | Method of attaching stems to conical valves | water valves | |
| 1,772,406 | Aug. 05, 1930 | L.E. Whiton | Valve | steam valves | |
| 2,200,163 | May 07, 1940 | E.J. Dillman | Control Device | flow controls | |