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| All Patents in class 279/93 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,703,716 | Mar. 08, 1955 | W.E. Shore | Saw blade plunger and chuck assembly | handheld power tools | |
| 2,726,091 | Dec. 06, 1955 | L.P. Topar | Tool Holder | tool holders | |
| 2,821,403 | Jan. 28, 1958 | B.J. Bevan | Tool Holder | tool holders | |
| 6,000,888 | Dec. 14, 1999 | R.L. Hartman | Quick Coupler Mechanism for Power Tool Bits | ||