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| All Patents in class 29/DIG.69 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 105,392 | Jul. 12, 1870 | W.L. Washburn | Grinding Apparatus | |
| 443,572 | Dec. 30, 1890 | E.C. Goeldner | Dental Grindstone Wetter and Wiper | ||
| 542,099 | Jul. 02, 1895 | B. Bloomheart, W.F. Nichols | Grinding Apparatus | ||
| 1,254,111 | Jan. 22, 1918 | W.F. Barry | Grinding or Polishing Apparatus | ||
| 1,269,831 | Jun. 18, 1918 | R.C. McCaleb | Razor Sharpening Machine | ||
| 2,219,444 | Oct. 29, 1940 | R.E. Grobe, T.F. Eserkaln | Grinding Wheel Dust Hood | ||