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| Patents for John C. Hewitt | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,184,947 | May 30, 1916 | J.A. Gossett, J.C. Hewitt | Pipe-forming machine | pipe making machines | |
| 1,271,888 | Jul. 09, 1918 | J.A. Gossett, J.C. Hewitt | Adjustable bearing-block | industrial machine bearings | |