| All Patents in class 451/8 |
Patents 16 -
30
of 39
      |
| Number | Date | Patentee | Title | Type |
| 1,563,046 | Nov. 24, 1925 | A.J. Brookes, J.E. Sears, Jr. | Method of and Apparatus for Measurement and/or Standardization | |
| 1,656,347 | Jan. 17, 1928 | J.A. Doane | Sizing Device for Surface Grinders | surface grinders |
| 1,768,931 | Jul. 01, 1930 | F.J. Pratt | Dial Indicator | measurement gauges |
| 1,792,043 | Feb. 10, 1931 | L. Scusa | Indicator Gauge | measurement gauges |
| 1,794,340 | Feb. 24, 1931 | M.K. Parkhurst | Optical Measuring Device | measurement gauges |
| 2,000,057 | May 07, 1935 | P.S. Arnold | Automatic Gauge Control and Means Therefor | special purpose gauges |
| 2,113,414 | Apr. 05, 1938 | B.F. Stowell | Gauge Mechanism | grinding attachments |
| 2,294,831 | Sep. 01, 1942 | R.W. Carson | Apparatus for Making Very Fine Measurments | measurement gauges |
| 2,365,059 | Dec. 12, 1944 | J. Decker | Feed Mechanism for Grinding Machines | coolant apparatus |
| 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 |
| 2,790,280 | Apr. 30, 1957 | J.W. Wilson, R.L. Henry | Spindle Positioning Mechanism | grinding machines |
| 2,962,840 | Dec. 06, 1960 | C.H. Werth | Grinding apparatus | grinders |
| 2,984,953 | May 23, 1961 | N.D. Neal | Electrical Gauging Device | electronic gauges |
| 3,127,713 | Apr. 07, 1964 | L.J. Carlier | Shoulder Grinding and Spindle End Adjustment Mechanism | grinding machines |
| 3,222,824 | Dec. 14, 1965 | W.B. Seidel | Machine Tool Positioning Mechanism | grinding machines |
