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| All Patents in class 700/170 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 4,208,718 | Jun. 17, 1980 | H. Chung | Method for Optimizing the Operation of Computer Controlled Machine Tool | ||
| 4,752,867 | Jun. 21, 1988 | L.W. Durham, B.S. Backe | Control Circuitry for Electric Drives | ||