| All Patents in class 451/49 |
Patents 1 -
15
of 31
      |
| Number | Date | Patentee | Title | Type |
| 104,492 | Jun. 21, 1870 | J.M. Poole | Machine for Grinding Rollers | profile and contour grinders |
| 1,271,495 | Jul. 02, 1918 | F.A. Ward | Method for Grinding Spline Shafts and Other Interrupted Cycindrical Bodies | grinder dressers |
| 1,273,016 | Jul. 16, 1918 | F.A. Ward | Splined shaft | motor vehicle gearing |
| 1,281,366 | Oct. 15, 1918 | L.R. Heim | Method of Grinding Hardened Rolls | |
| 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 |
| 1,670,717 | May 22, 1928 | S. Einstein | Method of Grinding | grinding machines |
| 1,707,708 | Apr. 02, 1929 | J.E. Caster | Process for the Production of Spherical Articles | grinding machines |
| 1,708,491 | Apr. 09, 1929 | C.R. Alden | Method of finishing ball bearings | industrial machine bearings |
| 1,722,388 | Jul. 30, 1929 | C.H. Norton | Method of Grinding Small Cylindrical Objects | grinding machines |
| 1,783,034 | Nov. 25, 1930 | C. Booth | Process of Producing Noncylindrical Articles | grinding machines |
| 1,949,515 | Mar. 06, 1934 | C.H. Norton | Method of turning and grinding round work surfaces | cylindrical grinders |
| 1,981,220 | Nov. 20, 1934 | J.E. Caster | Art of Grinding | grinding machines |
| 1,993,823 | Mar. 12, 1935 | G.W. Binns | Art of Grinding | grinding machines |
