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| All Patents in class 318/562 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,101,436 | Aug. 20, 1963 | G.W. Younkin | Numerically Controlled Positioning System | ||
| 3,465,332 | Sep. 02, 1969 | G.O. Albrecht, R.C. Taylor, Jr., N.D. Neal | Automatic Control Apparatus | ||
| 3,539,788 | Nov. 10, 1970 | J.K. McGee | Method and System for Digitally Signaling Absolute Position | ||
| 3,777,128 | Dec. 04, 1973 | E.E. Kirkham | Input Data Sampling Scheme for Computer Controlled Machine Tools | ||