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| All Patents in class 408/166 | |||||
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| Number | Date | Patentee | Title | Type | |
| 104,234 | Jun. 14, 1870 | J.E. Weaver | Improved Die for Cutting Screw Threads on Bolts | taps and dies | |
| 1,479,484 | Jan. 01, 1924 | E.C. Schmelzkopf | Reamer | reamers | |