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| Patents for John Adt | |||||
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| Number | Date | Patentee | Title | Type | |
| 39,193 | Jul. 07, 1863 | J. Adt | Centering Anvil | metal lathe accessories and attachments | |
| 54,640 | May 08, 1866 | J. Adt | Improved corkscrew | pocket and protected cork extractors | |
| 54,837 | May 22, 1866 | J. Adt | Riveting Machine | riveting machines | |
| 98,658 | Jan. 11, 1870 | J. Adt | Improvement in Screws and Nuts for Clamps | ||
| 203,691 | May 14, 1878 | J. Adt | Wire Cutting Machine | wire gauging and cutting machines | |