| All Patents in class 451/540 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 98,850 | Jan. 18, 1870 | H. Harpin, J. Coulter | Stone Dressing Machine | stone dressing machines |
| 261,198 | Jul. 18, 1882 | R. Barton | Dental Grinding Tool | dental apparatus |
| 750,479 | Jan. 26, 1904 | P.F. McCormick | Car Wheel Grinding Device | profile and contour grinders |
| 2,135,900 | Nov. 08, 1938 | H.W. Kulp | Grinding Tool | valve grinding tools |
| 2,254,508 | Sep. 02, 1941 | H.B. Barrett | Honing Tool | honing tools |
| 2,281,420 | Apr. 28, 1942 | J.C. Drader | Built Up Abrasive | gear cutting tools |
| 2,545,676 | Mar. 20, 1951 | L. Small | Diamond impregnated dressing tool | grinder dressers |
| 2,717,422 | Sep. 13, 1955 | W.J. Stolp, O.R. Rowe | Method and means for forming sanding blocks | |
| 2,823,498 | Feb. 18, 1958 | G.A. Saunders | Honing element | honing machines |
| 3,016,660 | Jan. 16, 1962 | M.J. Gross | Hone and abrasive element therefor | honing machines |
| 3,154,893 | Nov. 03, 1964 | K.H. Casson, D.K. Greenberg | Honing element | honing machines |
