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| All Patents in class 408/216 | |||||
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| Number | Date | Patentee | Title | Type | |
| 574,216 | Dec. 29, 1896 | S.E. Pranke | Combination Tap and Die | taps and dies | |
| 605,184 | Jun. 07, 1898 | G.E. Miller | Recessing Tool for Lathes | lathe tools | |
| 1,200,718 | Oct. 10, 1916 | H.L. Fisher | Cutter-head | pipe threading machines | |