| All Patents in class 29/DIG.69 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 105,392 | Jul. 12, 1870 | W.L. Washburn | Grinding Apparatus | grinders |
| 443,572 | Dec. 30, 1890 | E.C. Goeldner | Dental Grindstone Wetter and Wiper | dental apparatus |
| 542,099 | Jul. 02, 1895 | B. Bloomheart, W.F. Nichols | Grinding Apparatus | grinders |
| 1,254,111 | Jan. 22, 1918 | W.F. Barry | Grinding or Polishing Apparatus | polishing and buffing machinery |
| 1,269,831 | Jun. 18, 1918 | R.C. McCaleb | Razor Sharpening Machine | cutler |
| 2,219,444 | Oct. 29, 1940 | R.E. Grobe, T.F. Eserkaln | Grinding Wheel Dust Hood | grinders |
