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| All Patents in class 279/43.6 | |||||
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| Number | Date | Patentee | Title | Type | |
| 56,059 | Jul. 03, 1866 | F.G. Johnson | Improvement in Drill-Chucks | drill chucks | |
| 1,900,922 | Mar. 14, 1933 | L.R. Evans | Gripping Face for Chucks and Method Of Making the Same | tool holding collets | |
| 2,069,775 | Feb. 09, 1937 | C.A. Rich | Feed Collet | ||
| 2,187,170 | Jan. 16, 1940 | J.R. O'Connell | Feed chuck | metal lathe chucks | |
| 2,606,033 | Aug. 05, 1952 | H.S. Sizer | Machine-Tool Feed Finger | screw machines | |