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| Patents Granted on 1980-04-15 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,197,888 | Apr. 15, 1980 | L.M. Yock, R.A. Browning, A.L. McGee | Log centering apparatus and method using transmitted light and reference edge log scanner | wood lathe accessories | |
| 4,198,699 | Apr. 15, 1980 | R.W. Caddell | Mass Memory Access Method and Apparatus | machine tool controls | |