| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 91/457 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 500,271 | Jun. 27, 1893 | F. Phillips | Valve for engines | ||
| 675,112 | May 28, 1901 | R.A. Rutherford | Pneumatic Hoisting Apparatus | hoists, winches, come-alongs | |
| 2,388,832 | Nov. 13, 1945 | W.W. Criley | Control Mechanism | machine tool controls | |
| 2,537,391 | Jan. 09, 1951 | H.F. Bakewell | Hydraulic ram device with intermittent high-pressure fluid supply | stamping presses | |