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| All Patents in class 279/152 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,918,439 | Jul. 18, 1933 | L.K. Warman | Chuck | ||
| 2,343,570 | Mar. 07, 1944 | A.W. Nelson | Chucking Device for Use in Screw and Similar Machines | ||
 | 3,054,621 | Sep. 18, 1962 | R.E. Buck | Resilient auxiliary chuck jaw | |