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| All Patents in class 279/43.3 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 56,059 | Jul. 03, 1866 | F.G. Johnson | Improvement in Drill-Chucks | |
 | 66,641 | Jul. 09, 1867 | J.C. Shackleton | Lathe Tool | |
 | 121,850 | Dec. 12, 1871 | A.A. Cook | Divider | |
 | 243,806 | Jul. 05, 1881 | D. Slate | Drill-chuck | |
 | 279,917 | Jun. 26, 1883 | F.J. Colvin | Screw-Driver | |
| 460,922 | Oct. 06, 1891 | S.B. Minnich | Compensating bit-holder | ||
| 735,138 | Aug. 04, 1903 | J.M. Normand | Tool Holder | ||
| 1,361,198 | Dec. 07, 1920 | C.A. Strand | Tool Holder | ||
| 4,211,510 | Jul. 08, 1980 | D.A. Hopkins | Adjustable Boring Head | ||