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| Patents for John Yerkes | |||||
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| Number | Date | Patentee | Title | Type | |
| 609,567 | Aug. 23, 1898 | J. Yerkes | Dowel-hole-boring machine | drilling and boring | |
| 741,429 | Oct. 13, 1903 | J. Yerkes | Lathe for cutting and turning corncob pipe sections | wood lathes | |