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| All Patents in class 209/598 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,940,365 | Jun. 14, 1960 | J.C. Drader | Control Apparatus | machine tool controls | |
| 3,366,248 | Jan. 30, 1968 | C.B. Sipek, R.K. Sedgwick | Tool Identification System | milling machines | |