| All Patents in class 451/57 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 392,814 | Nov. 13, 1888 | J.H. McCully | Process of finishing ladder-rails | specialty woodworking machines |
| 1,289,924 | Dec. 31, 1918 | A.J. Sanford | Knob Grinding Machine | |
| 2,586,755 | Feb. 19, 1952 | J.C. Wilson | Method and Apparatus for Grinding | grinder dressers |
| 2,934,863 | May 03, 1960 | R.F. Pendergast | Wide-belt sander | sanding machines |
| 3,269,065 | Aug. 30, 1966 | J.A. Nylund | Sanding apparatus | sanding machines |
| 5,702,287 | Dec. 30, 1997 | D.E. Haney | Sander with orbiting platen and abrasive | sanding machines |
