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| All Patents in class 279/125 | |||||
| Number | Date | Patentee | Title | Type | |
| 2,153,847 | Apr. 11, 1939 | L. Scruggs | Chuck or Tool Holder | metalworking machine tool holders | |
| 2,706,544 | Apr. 19, 1955 | R.H. Schuman | Machine Tool Drive | metalworking machine mechanisms | |
| 5,496,139 | Mar. 05, 1996 | S.R. Wente, G.A. Putney, M.S. Scolaro, A.P. Ghode | Collet Lock Arrangement for Power Tool | ||