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| All Patents in class 279/9.1 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,289,583 | Jul. 14, 1942 | F.J. Malone | Tool Holder | metalworking machine tool holders | |
| 2,345,462 | Mar. 28, 1944 | D.J. Coughlin | Cutting Tool Holder | milling machine accessories | |
| 2,755,117 | Jul. 17, 1956 | J.B. Armitage | Machine Tool Spindles | milling machines | |
| 2,972,486 | Feb. 21, 1961 | B.R. Better | Indirect Chucking | grinding fixtures | |
| 5,343,786 | Sep. 06, 1994 | G.A. Wridt | Bit and Socket Combination | socket wrenches | |