| All Patents in class 451/51 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 72,636 | Dec. 24, 1867 | W.C. Hicks | Grinding and Polishing Concave Surfaces | polishing and buffing machinery |
| 1,779,467 | Oct. 28, 1930 | S. Einstein | Process of Grinding | grinding machines |
| 1,972,316 | Sep. 04, 1934 | C.H. Randolph | Process of and apparatus for grinding internal surfaces of tubes | |
| 2,033,324 | Mar. 10, 1936 | L.F. Nenninger, J.E. Caster | Process of Grinding | grinding machines |
| 2,167,758 | Aug. 01, 1939 | W.M. Fairbairn, A.M. Johnson | Method and machine for honing cylindrical surfaces | honing machines |
| 2,315,794 | Apr. 06, 1943 | A.M. Johnson | Method of and apparatus for honing | honing machines |
| 2,345,581 | Apr. 04, 1944 | H.J. Caldwell | Machine tool | |
| 2,377,310 | Jun. 05, 1945 | H.J. Caldwell, E.Y. Seborg | Control mechanism for honing machines | honing machines |
| 2,403,546 | Jul. 09, 1946 | J.O. Olsen | Method and apparatus for honing | honing machines |
| 2,450,660 | Oct. 05, 1948 | G.W. Hardy | Method of Forming Propeller Hubs | aircraft |
| 2,478,607 | Aug. 09, 1949 | L.E. Mehlhope, F.J. Theler | Grinding Machine | cylindrical grinders |
| 2,569,873 | Oct. 02, 1951 | E.L. Stacey | Method of Setting of Tool for Brake Drum Machining | special purpose gauges |
| 3,209,494 | Oct. 05, 1965 | W.B. Seidel | Method and Apparatus for Grinding Annular Workpieces | cylindrical grinders |
| 3,237,350 | Mar. 01, 1966 | M.R. Estabrook | Automatic honing method | honing machines |
| 4,704,825 | Nov. 10, 1987 | W.R. Moore | Method for Automatically Sizing a Ground Surface on a Workpiece | electronic gauges |
