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| All Patents in class 164/216 | |||||
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| Number | Date | Patentee | Title | Type | |
| 356,430 | Jan. 18, 1887 | G.F. Stearns | Making Molds for Making Augers | making drills and augers | |
| 518,146 | Apr. 10, 1894 | O. Henning | Machine for Forming Screw Threads | metalworking machines | |