| All Patents in class 451/407 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 980,052 | Dec. 27, 1910 | J. Hausman, J.C. Blevney | Grinding and polishing machine | sanding machines |
| 1,264,930 | May 07, 1918 | L.R. Heim | Roll Grinding Machine | |
| 1,268,341 | Jun. 04, 1918 | J.J. Gillespie | Grinding Machine | bench or pedestal grinders |
| 1,575,520 | Mar. 02, 1926 | W.D. Archea | Work Carrying Device for Grinding Machines | centerless grinders |
| 1,575,557 | Mar. 02, 1926 | L.F. Nenninger, S.F. Einstein | Work Rest and Guiding Device for Grinding Machines | centerless grinders |
| 1,611,048 | Dec. 14, 1926 | C. Knowles | Back Rest for Cylindrical Grinders | cylindrical grinders |
| 1,639,958 | Aug. 23, 1927 | C.H. Norton | Centerless Grinding Machine | grinding machines |
| 1,688,103 | Oct. 16, 1928 | W.D. Archea | Work Rest and Ejecting Device for Grinding Machines | grinding machines |
| 1,691,061 | Nov. 13, 1928 | L.R. Heim | Grinding Device | grinding machines |
| 1,722,386 | Jul. 30, 1929 | C.H. Norton | Centerless Grinding Machine | grinding machines |
| 1,722,388 | Jul. 30, 1929 | C.H. Norton | Method of Grinding Small Cylindrical Objects | grinding machines |
| 1,723,128 | Aug. 06, 1929 | G.W. Binns | Centerless Grinder | grinding machines |
| 1,735,867 | Nov. 19, 1929 | F.M. Kern | Grinding Machine | grinding machines |
| 1,741,236 | Dec. 31, 1929 | L.R. Heim | Grinding | grinding machines |
| 1,814,351 | Jul. 14, 1931 | F.J. Theler | Grinding Machinery | grinding machines |
