| All Patents in class 451/261 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 359,919 | Mar. 22, 1887 | J.K. Chace | Machine for Scouring Sheet Metal | sheet metal |
| 389,826 | Sep. 18, 1888 | A.F. Tyler | Machine for smoothing and finishing blind-slats | windowblind machines |
| 484,639 | Oct. 18, 1892 | W.F. Larish | Jointing and sanding machine | sanding machines |
| 1,416,952 | May 23, 1922 | R.D. Gardner | Ring-grinding machine | |
| 1,563,901 | Dec. 01, 1925 | R.D. Gardner | Grinding machine | |
| 1,659,092 | Feb. 14, 1928 | E.B. Gardner | Ring-grinding machine | |
| 1,670,111 | May 15, 1928 | E.B. Gardner | Grinding machine | |
| 1,784,231 | Dec. 09, 1930 | F.E. Gardner | Grinding machine | disk sanders |
| 3,151,420 | Oct. 06, 1964 | G.J. Machacek, Jr. | Machine for grinding knives | sharpening machines |
| 4,704,823 | Nov. 10, 1987 | C.I. Steinback | Abrasive surfacing machine | metal sanding machines |
