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| All Patents in class 269/49 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 994,630 | Jun. 06, 1911 | O. Bergstrom | Clamp | |
 | 1,615,488 | Jan. 25, 1927 | J.A. Schleicher | Wrench and handle for inside micrometers | |
| 1,788,652 | Jan. 13, 1931 | P.E. Butzin, W.K. Andrew | Clamping Device | ||
| 2,078,598 | Apr. 27, 1937 | J.Y. Blazek, R.J. Kuschel | Clamping means | ||
| 2,752,801 | Jul. 03, 1956 | E.T. Olson | Fluid actuated clamp | ||
| 3,459,087 | Aug. 05, 1969 | R.H. Weisner | Shear gage | ||