| All Patents in class 451/540 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
| | 98,850 | Jan. 18, 1870 | H. Harpin, J. Coulter | Stone Dressing Machine |
| | 261,198 | Jul. 18, 1882 | R. Barton | Dental Grinding Tool |
| | 750,479 | Jan. 26, 1904 | P.F. McCormick | Car Wheel Grinding Device |
 | 2,135,900 | Nov. 08, 1938 | H.W. Kulp | Grinding Tool |
 | 2,254,508 | Sep. 02, 1941 | H.B. Barrett | Honing Tool |
| | 2,281,420 | Apr. 28, 1942 | J.C. Drader | Built Up Abrasive |
 | 2,545,676 | Mar. 20, 1951 | L. Small | Diamond impregnated dressing tool |
 | 2,717,422 | Sep. 13, 1955 | O.R. Rowe, W.J. Stolp | Method and means for forming sanding blocks |
| | 2,823,498 | Feb. 18, 1958 | G.A. Saunders | Honing element |
| | 3,016,660 | Jan. 16, 1962 | M.J. Gross | Hone and abrasive element therefor |
