| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | Patent number: | Patent Date: |
| All Patents in class 417/311 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,213,522 | Jan. 23, 1917 | C.W. Manzel | Air Pump | air pumps | |
| 1,460,875 | Jul. 03, 1923 | A. White | Rotary gear pump | ||
| 2,143,229 | Jan. 10, 1939 | P.S. Russel | Control Device | industrial control apparatus | |