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| All Patents in class 279/32 | |||||
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| Number | Date | Patentee | Title | Type | |
| 150,456 | May 05, 1874 | T.R. Almond | Bushings for Machinery | industrial machine bearings | |
| 670,533 | Mar. 26, 1901 | A.A. Byrd | Expanding-mandrel and chuck | mandrels and arbors | |
| 788,873 | May 02, 1905 | S.F. Anderson | Bit for carving-machines | carving machines | |
| 984,000 | Feb. 14, 1911 | H.E. Hull | Boring Tool Holder | drilling and boring tool holders | |
| 2,038,602 | Apr. 28, 1936 | J.M. Redinger | Chuck | milling machine tools | |