| All Patents in class 318/640 |
Patents 1 -
6
of 6
      |
| Picture | Number | Date | Patentee | Title |
| | 280,426 | Jul. 03, 1883 | W. Wheeler | Focus Regulator for Electric Arc Lamps |
| | 2,651,746 | Sep. 08, 1953 | J.J. Gano | Control Device |
| | 2,694,804 | Nov. 16, 1954 | E.K. Wagner | Positioning Device |
| | 2,710,934 | Jun. 14, 1955 | J.A. Senn | Motor Controlled Machine Tool Positioning Mechanism |
| | 2,832,894 | Apr. 29, 1958 | R.H. Eisengrein, R.J. W, D.A. Straznickas | Automatic machine |
| | 3,596,153 | Jul. 27, 1971 | E.E. Kirkham, W.E. Brainard | Positional Control System for a Machine Tool |
