| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 418/31 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,965,388 | Jul. 03, 1934 | P.O. Ott | Rotary Pump | rotary pumps | |
| 1,988,213 | Jan. 15, 1935 | P.O. Ott | Multiple Rotary Pump | rotary pumps | |
| 2,035,465 | Mar. 31, 1936 | W. Reinhardt, M.E. Erskine | Hydraulic Pump | hydraulic pumps | |
| 3,083,535 | Apr. 02, 1963 | F.G. Krafft, W. Ernst | Hydraulic servo system | hydraulic apparatus | |