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| All Patents in class 81/7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 94,208 | Aug. 31, 1869 | C. Hopkins | Re-Jewelling Watches | watchmaking machinery | |
| 451,712 | May 05, 1891 | A. Hartung | Watch Makers Jewel Setting Cutter | watchmakers lathes | |
| 1,144,795 | Jun. 29, 1915 | E.C. Schmelzkopf | Boring Bar | boring bars | |