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| All Patents in class 470/8 | |||||
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| Number | Date | Patentee | Title | Type | |
| 770,966 | Sep. 27, 1904 | J. Hunter | Tool Holder | tap and die holders | |
| 1,118,073 | Nov. 24, 1914 | W.S. Thomson | Process of Making Threaded Tool Members and Blanks for the Same | pipe wrenches | |
| 2,764,767 | Oct. 02, 1956 | W.J. Adlaf | Releasable Screw Threading Tool Holder | tapping heads and chucks | |
| 6,390,929 | May 21, 2002 | J.L. Hyatt | Method for Making Drive Sockets | making wrenches | |