| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 251/362 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
| 1,044,623 | Nov. 19, 1912 | C.L. Bailey | Valve | ||
 | 2,056,160 | Oct. 06, 1936 | H.L. Allen | Valve Element and the Method of Forming the Same | |
| 2,505,992 | May 02, 1950 | H.W. Webb, F.F. Rike | Valve | ||