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| Patents Granted on 1980-06-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,207,679 | Jun. 17, 1980 | M.L. Poage | Micrometer | micrometers | |
| 4,208,718 | Jun. 17, 1980 | H. Chung | Method for Optimizing the Operation of Computer Controlled Machine Tool | numerically controlled milling machines | |