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| Patents for Superior Machine Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 428,803 | May 27, 1890 | P.T. Coffield | Tap | taps and dies | |
| 539,792 | May 28, 1895 | F.H. Bultman | Automatic gear-cutting and milling machine | gear making machines | |