| All Patents in class 451/6 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 354,740 | Dec. 21, 1886 | W.A. Rogers | Measuring devices for lathe | wood lathes |
| 1,794,340 | Feb. 24, 1931 | M.K. Parkhurst | Optical Measuring Device | measurement gauges |
| 1,993,830 | Mar. 12, 1935 | R.E. Conover | Grinding Machine | grinding machines |
| 2,042,257 | May 26, 1936 | C.W. Hopkins, R.E. Harrison | Machine Tool | grinding machines |
| 2,086,153 | Jul. 06, 1937 | C.A. Bickel | Apparatus for Control of Machine Tools | machine tool controls |
| 2,125,584 | Aug. 02, 1938 | E. Rotzoli | Adjusting Device for Machine Tools | metalworking machines |
| 2,169,159 | Aug. 08, 1939 | G. Müller | Means for Accurate Screw Cutting | metalworking machines |
| 2,220,268 | Nov. 05, 1940 | J.O. Olsen | Machine tool | |
| 2,263,404 | Nov. 18, 1941 | O.W. Barker, J.B. Armitage | Boring and Milling Machine | milling machines |
| 2,311,142 | Feb. 16, 1943 | F. Turrettini | Precision Machine Tool | metalworking machines |
| 2,535,183 | Dec. 26, 1950 | J.C. Wilson | Grinding Wheel Dressing Apparatus | grinder dressers |
| 2,540,774 | Feb. 06, 1951 | R.O. Beardsley | Holding Fixture | jigs and fixtures |
| 2,585,533 | Feb. 12, 1952 | W.J. Bryant, T.H. Ljunggren, W.F. Moore | Internal grinding machine with automatic air gauge sizing | cylindrical grinders |
| 2,652,664 | Sep. 22, 1953 | F.C. Savage, J.A. Allan | Operator-controlled Grinding Machine With Optical Comparator | profile and contour grinders |
| 3,916,576 | Nov. 04, 1975 | H.R. Uhtenwoldt, A.T. Blackburn | Grinding Machine | machine tool controls |
