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| All Patents in class 700/172 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,390,315 | Jun. 25, 1968 | H.P. Grossimon, A.K. Susskind, J.O. McDonough | Apparatus for Numerical Control of a Multiaxes Machine Tool Including Interpolation and Feedrate Control | nc and cnc apparatus | |
| 3,970,830 | Jul. 20, 1976 | B.W. Wilterdink, P.H. White | Computer Controlled Machine Tool Contouring System | machine tool controls | |
| 4,752,867 | Jun. 21, 1988 | L.W. Durham, B.S. Backe | Control Circuitry for Electric Drives | machine tool controls | |