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| All Patents in class 341/112 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,040,221 | Jun. 19, 1962 | A.O. Fitxner | Positioning Control Apparatus | machine tool controls | |
| 3,078,400 | Feb. 19, 1963 | J.O. McDonough, H.P. Kilroy | Phase Responsive Servosystem Control of a Variable Condition Having Positive or Negative Values | electronic circuitry and apparatus | |
| 4,358,723 | Nov. 09, 1982 | P.F. Fitts, J.A. Scholl | Method and apparatus for measuring the rotation of a work table | ||