| All Patents in class 125/11.21 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
| | 77,303 | Apr. 28, 1868 | R.B. Matthews | Machine for Facing Grindstones |
| | 561,367 | Jun. 02, 1896 | G.L. Badger | Method and Apparatus for Dressing Stone |
 | 1,091,851 | Mar. 31, 1914 | A.B. Landis | Automatic balancing mechanism |
 | 1,155,532 | Oct. 05, 1915 | F.A. Ward | Trimming mechanism for grinder-wheels of shaft-grinding machines |
 | 1,483,748 | Feb. 12, 1924 | F.C. Sanford | Grinding Machine |
| | 1,631,596 | Jun. 07, 1927 | H.E. Kempton | Wheel Dressing Mechanism |
| | 1,753,682 | Apr. 08, 1930 | G.W. Binns | Truing Mechanism |
| | 1,871,504 | Aug. 16, 1932 | L.F. Nenninger, S. Einstein | Truing Device for the Wheels of Grinding Machines |
| | 1,954,771 | Apr. 10, 1934 | E. Sobolewski | Truing Apparatus |
| | 2,010,359 | Aug. 06, 1935 | F.S. Haas | Grinding Machine |
