| All Patents in class 451/243 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 1,249,632 | Dec. 11, 1917 | H.R. Isler | Grinding-machine | surface grinders |
| 1,733,087 | Oct. 22, 1929 | L.R. Heim | Grinding Apparatus | grinding machines |
| 1,733,492 | Oct. 29, 1929 | E.R. Seward, F.M. Kern | Grinding Machine | grinding machines |
| 1,776,241 | Sep. 16, 1930 | F.S. Haas, J.E. Caster | Grinding Machinery | grinding machines |
| 1,779,467 | Oct. 28, 1930 | S. Einstein | Process of Grinding | grinding machines |
| 1,791,442 | Feb. 03, 1931 | J.E. Caster | Grinding Machine | grinding machines |
| 1,814,361 | Jul. 14, 1931 | C. Booth | Grinding Machinery | grinding machines |
| 1,814,365 | Jul. 14, 1931 | C. Booth | Grinding Machinery | grinding machines |
| 1,847,588 | Mar. 01, 1932 | C. Booth | Grinding Machine | grinding machines |
| 1,952,182 | Mar. 27, 1934 | B.R. Purvin | Grinding Machine | grinding machines |
| 1,983,853 | Dec. 11, 1934 | C.W. Hopkins | Grinding Machine | grinding machines |
| 1,991,724 | Feb. 19, 1935 | C. Booth, G.W. Binns | Grinding Machine | grinding machines |
| 3,079,741 | Mar. 05, 1963 | E.F. Render | Method for Grinding | centerless grinders |
| 3,284,959 | Nov. 15, 1966 | W.B. Seidel | Multi-Station Grinding Machine | cylindrical grinders |
| 6,312,314 | Nov. 06, 2001 | E. Smith, B.M. Olevskiy, C.J. Cheetham | Guidewire Position Locator | centerless grinders |
