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| Patents for Charles E. Perkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 138,690 | May 06, 1873 | C.E. Perkins | Improvement in piston-packings | piston ring and packing | |
| 658,618 | Sep. 25, 1900 | F.A. Chellis | Wrench | ratchet wrenches | |