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| Patents for William J. Rawitzer | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,693,727 | Nov. 09, 1954 | E.T. Olson | Hydraulic vise | bench vises | |
| 2,708,381 | May 17, 1955 | E.T. Olson | Hydraulic machine vise having cylinder-advanced spring-retracted jaw-operating screw | bench vises | |
| 2,708,382 | May 17, 1955 | E.T. Olson | Hydraulic machine vise having a screw-adjusted piston housed in a slidable jaw | bench vises | |
| 2,752,801 | Jul. 03, 1956 | E.T. Olson | Fluid actuated clamp | work holding | |