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| All Patents in class 269/48.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,654,686 | Apr. 11, 1972 | W.L. Diffenderfer, F.R. McFarland | Clamping Tool | valve tappet removers | |
| 3,844,546 | Oct. 29, 1974 | D.K. Greenberg | Clamping fixture for a tubular workpiece | ||
| 8,720,874 | May 13, 2014 | S.J. Tschida, D.L. Schmidt | Ball actuated lock pin | work holding | |