| All Patents in class 29/DIG.091 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 162,194 | Apr. 20, 1875 | E. Schlenker | Improvement in bolt-threading machines |
| | 179,318 | Jun. 27, 1876 | O.L. Jenks | Improvement in circular-saw mills |
 | 195,626 | Sep. 25, 1877 | F. McDonough | Improvement in devices for cooling saws |
| | 358,323 | Feb. 22, 1887 | J.C. Ballew | Apparatus for removing gum from saws |
 | 406,003 | Jun. 25, 1889 | G.T. Reiss | Turret-lathe |
| | 2,021,602 | Nov. 19, 1935 | P.S. Jackson | Grinding machine |
| | 2,361,550 | Oct. 31, 1944 | E.C. Krueger | Grinding machine |
| | 2,534,941 | Dec. 19, 1950 | W.G. Baldenhofer | Method and apparatus for grinding |
