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| All Patents in class 700/251 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,909,600 | Sep. 30, 1975 | R.E. Hohn | Method and Apparatus for Controlling an Automation Along a Predetermined Path | machine tool controls | |
| 3,920,972 | Nov. 18, 1975 | R.L. Tarvin, R.E. Hohn, M.D. Corwin, Jr. | Method and Apparatus for Programming a Computer Operated Robot Arm | machine tool controls | |