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| Patents for John C. Dewey | |||||
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| Picture | Number | Date | Patentee | Title | |
| 294,389 | Mar. 04, 1884 | E.J. Humphreys | Mortising-machine | ||
 | 354,076 | Dec. 07, 1886 | E.E. Webb | Spirit Level | |
 | 381,788 | Apr. 24, 1888 | G.F. Huthins | Planer Attachment for Cutting Internal Gears | |
 | 426,588 | Apr. 29, 1890 | S.E. Hildreth | Upright drill | |
 | 491,926 | Feb. 14, 1893 | G.H. Nutt | Surface Gage | |
 | 522,053 | Jun. 26, 1894 | W.H. Gates | Trammel | |
 | 538,010 | Apr. 23, 1895 | J.M. Carriere | Holder for Scrapers | |