| All Patents in class 74/337.5 |
Patents 16 -
25
of 25
      |
| Number | Date | Patentee | Title | Type |
| 2,540,573 | Feb. 06, 1951 | C.E. Greene, R.B. Evans | Power Actuated Gear Shifter | metalworking variable speed mechanisms |
| 2,591,268 | Apr. 01, 1952 | R.K. Blond, H.C. Kemper | Milling machine transmission control mechanism | milling machines |
| 2,630,718 | Mar. 10, 1953 | F.D. Dickas | Variable-speed mechanism | |
| 2,644,370 | Jul. 07, 1953 | J.B. Armitage | Pattern Controlled Milling Machine | milling machines |
| 2,767,598 | Oct. 23, 1956 | F.G. Burg | Speed control system for machine tools | drill presses |
| 2,814,959 | Dec. 03, 1957 | F.L. Dodge | Variable speed drive | metal lathes |
| 2,866,347 | Dec. 30, 1958 | M. Weidig | Preselect Mechanism | machine tool controls |
| 3,058,365 | Oct. 16, 1962 | W.R. Gerchow | Speed change device | |
| 3,145,577 | Aug. 25, 1964 | E.P. Bullard, IV, E.P. Bullard, III | Semi-Automatic Control for Machine Tools | machine tool controls |
| 3,280,651 | Oct. 25, 1966 | O. Hermann | Digital Actuator | machine tool controls |
