| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 251/239 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,276,227 | Mar. 10, 1942 | E.J. Dillman | Control Device | temperature controls | |
| 2,388,832 | Nov. 13, 1945 | W.W. Criley | Control Mechanism | machine tool controls | |