| All Patents in class 451/245 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 397,114 | Feb. 05, 1889 | N.H. Dolsen | Machine for removing bark from trees | debarking machines |
| 398,243 | Feb. 19, 1889 | H. Ferguson | Machine for finishing poles or rods | sanding machines |
| 980,052 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine | sanding machines |
| 1,281,366 | Oct. 15, 1918 | L.R. Heim | Method of Grinding Hardened Rolls | |
| 1,524,969 | Feb. 03, 1925 | L.F. Nenninger, S. Einstein | Centerless Grinding Machine | centerless grinders |
| 1,647,129 | Nov. 01, 1927 | L.R. Heim | Grinding | grinding machines |
| 1,647,130 | Nov. 01, 1927 | L.R. Heim | Art of Grinding | grinding machines |
| 1,647,131 | Nov. 01, 1927 | L.R. Heim | Grinding | grinding machines |
| 1,691,061 | Nov. 13, 1928 | L.R. Heim | Grinding Device | grinding machines |
| 1,772,544 | Aug. 12, 1930 | L.R. Heim | Truing Device for Abrasive Wheels Used in Producing Ground Articles | grinding machines |
| 1,783,034 | Nov. 25, 1930 | C. Booth | Process of Producing Noncylindrical Articles | grinding machines |
| 1,850,373 | Mar. 22, 1932 | C. Booth | Grinding Machine | grinding machines |
| 2,042,257 | May 26, 1936 | C.W. Hopkins, R.E. Harrison | Machine Tool | grinding machines |
| 2,377,921 | Jun. 12, 1945 | F.J. Theler, G.W. Binns | Grinding Machine | centerless grinders |
| 3,079,741 | Mar. 05, 1963 | E.F. Render | Method for Grinding | centerless grinders |
