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| Patents for Imperial Mfg. Co. | |||||
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| Number | Date | Patentee | Title | Type | |
| 262,613 | Aug. 15, 1882 | J. Pitt | Corkscrew | mechanical cork extractors | |
| 452,410 | May 19, 1891 | A. Hitt | Wrench | pipe and nut combination wrenches | |