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| All Patents of Type: screw machine tool holders and tools | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,032,382 | Jul. 16, 1912 | W.S. Davenport | Turning Tool | screw machine tool holders and tools | |
| 1,329,265 | Jan. 27, 1920 | M.A. Culling | Taper Turning Tool | screw machine tool holders and tools | |
| 1,978,427 | Oct. 30, 1934 | W.J. Hogg | Combined Circular Chaser and Turning Tool | tap and die holders | |