| All Patents in class 250/215 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 1,891,777 | Dec. 20, 1932 | A.G. Plimmer | Grinding Machine | grinding machines |
| 1,986,915 | Jan. 08, 1935 | G.A. Biggs | Hydraulic Turbine | turbine water wheels |
| 2,311,142 | Feb. 16, 1943 | F. Turrettini | Precision Machine Tool | metalworking machines |
| 2,406,299 | Aug. 20, 1946 | M. Koulicovitch | Machine Tool with Photoelectric Positioning of the Work Table | metalworking machines |
| 2,441,403 | May 11, 1948 | B.N. Engle, J.B. Engle | Teeth setter for saws | saw sharpening machines |
| 3,348,057 | Oct. 17, 1967 | R.K. Burroughs | Method and Apparatus for Checking the Straightness of Machine Tool Ways and the Like | metalworking machine mechanisms |
