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| All Patents in class 40/625 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,052,999 | Sep. 11, 1962 | C.B. Sipek, R.K. Sedgwick | Identifying Means for Tools | milling machine tools | |
| 3,251,150 | May 17, 1966 | C.B. Sipek, R.K. Sedgwick | Identifying Means for Tools | milling machines | |