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| All Patents in class 279/2.24 | |||||
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| Number | Date | Patentee | Title | Type | |
| 154,345 | Aug. 25, 1874 | A. Saunders | Chucks for Holding Pipe Nipples | chucks | |
| 1,772,082 | Aug. 05, 1930 | J.H. Hoern | Device for Assembling and Holding Piston Rings for Machining Operations | metalworking machine mechanisms | |
| 1,947,957 | Feb. 20, 1934 | J.R. Tillman | Workholder | ||
| 2,050,828 | Aug. 11, 1936 | T.B. Buell | Chuck | ||