| All Patents in class 451/273 |
Patents 16 -
30
of 37
      |
| Number | Date | Patentee | Title | Type |
| 705,226 | Jul. 22, 1902 | J. Ettinger | Grinding-machine | cutter grinding machines |
| 945,455 | Jan. 04, 1910 | B.M. Hanson | Reducing-machine | milling machines |
| 983,226 | Jan. 31, 1911 | B.M. Hanson | Grinding Machine | grinders |
| 1,052,605 | Feb. 11, 1913 | S. MacKay | Grinding Machine | sharpening machines |
| 1,077,306 | Nov. 04, 1913 | P.H. Root | Grinding Machine | sharpeners |
| 1,081,465 | Dec. 16, 1913 | J.F. Pribnow | Emery-wheel bench-grinder | bench or pedestal grinders |
| 1,231,238 | Jun. 26, 1917 | R.L. Carter | Gage | sanding machines |
| 1,482,465 | Feb. 05, 1924 | F.E. Gardner | Grinding machine | disk sanders |
| 1,497,436 | Jun. 10, 1924 | F.E. Gardner | Grinding machine | disk sanders |
| 1,664,024 | Mar. 27, 1928 | J. de Koning | Grinding machine | |
| 1,784,231 | Dec. 09, 1930 | F.E. Gardner | Grinding machine | disk sanders |
| 2,007,180 | Jul. 09, 1935 | J.E. Doran, J.M. Walter, F.E. Cardullo | Device for moving a machine member or other part, by power means, an exact distance or to an exact position | milling machines |
| 2,089,808 | Aug. 10, 1937 | W.F. Ocenasek | Sanding machine | sanding machines |
| 2,153,502 | Apr. 04, 1939 | W.F. Ocenasek | Apparatus for bench grinding long blades | cutter grinding |
| 2,164,212 | Jun. 27, 1939 | R.K. Blond | Attachment for cutter grinders | tool grinders |
