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| Patents for John N. Mayer | |||||
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| Number | Date | Patentee | Title | Type | |
| 341,226 | May 04, 1886 | J. Davis | Boring-machine | drilling and boring | |
| 344,566 | Jun. 29, 1886 | J.H. Cluever | Corkscrew | mechanical cork extractors | |