| All Patents in class 33/547 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,480,390 | Jan. 08, 1924 | J. Hartness | Apparatus for Inspecting and Gauging Screw Threads | |
| 2,580,239 | Dec. 25, 1951 | R.O. Beardsley, L.B. Fuller, H.L. Murch | Comparator for Tracing Contours of Solid Objects | comparators |
| 2,621,556 | Dec. 16, 1952 | J.A. Allan, R.O. Beardsley | Comparator for Testing Turbine Blades and the Like | comparators |
| 2,648,912 | Aug. 18, 1953 | J.H. Osgood | Contour Inspection Device | comparators |
| 2,799,206 | Jul. 16, 1957 | L.B. Fuller | Wide Range Optical Projection Contour Inspection System | comparators |
| 3,077,815 | Feb. 19, 1963 | A.J. Coakley | Optical Projection Contour Inspection System | comparators |
