| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 417/31 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 213,314 | Mar. 18, 1879 | G.M. Beard | Windmill-Pump | wind power apparatus | |
| 2,168,307 | Aug. 08, 1939 | P.S. Russel, A.G. Hann | Control Device | flow controls | |