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| All Patents in class 470/84 | |||||
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| Number | Date | Patentee | Title | Type | |
| 71,605 | Dec. 03, 1867 | W.T. Gillinder | Forming Threads on Sheet Metal Caps | taps and dies | |
| 365,621 | Jun. 28, 1887 | H.A. Nettleton | Mechanism for Forming Threads | taps and dies | |
| 1,708,183 | Apr. 09, 1929 | A. Levedahl | Spindle lock | ||