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| All Patents in class 346/33MC | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,651,746 | Sep. 08, 1953 | J.J. Gano | Control Device | milling machines | |
| 2,882,476 | Apr. 14, 1959 | T.A. Wetzel | Motor Control System | milling machines | |
| 3,217,331 | Nov. 09, 1965 | T.A. Stoner, T.A. Wetzel | Method of Recording a Control Program | numerically controlled milling machines | |