| All Patents in class 451/244 |
Patents 1 -
10
of 74
      |
| Picture | Number | Date | Patentee | Title |
| | 1,264,930 | May 07, 1918 | L.R. Heim | Roll Grinding Machine |
| | 1,575,520 | Mar. 02, 1926 | W.D. Archea | Work Carrying Device for Grinding Machines |
| | 1,575,558 | Mar. 02, 1926 | W.D. Archea, L.F. Nenninger, S. Einstein | Centreless Grinding Machine |
| | 1,611,135 | Dec. 14, 1926 | F.C. Sanford | Grinding Machine |
| | 1,611,136 | Dec. 14, 1926 | F.C. Sanford | Centerless Grinding Machine for Tapering Drills and the Like |
| | 1,665,084 | Apr. 03, 1928 | J.E. Caster | Grinding Machinery |
| | 1,676,620 | Jul. 10, 1928 | C.H. Norton | Grinding Apparatus |
| | 1,688,103 | Oct. 16, 1928 | W.D. Archea | Work Rest and Ejecting Device for Grinding Machines |
| | 1,707,708 | Apr. 02, 1929 | J.E. Caster | Process for the Production of Spherical Articles |
| | 1,709,818 | Apr. 16, 1929 | G.W. Binns | Grinding |
