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| Patents for H. W. Hoyt | |||||
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| Number | Date | Patentee | Title | Type | |
| 525,443 | Sep. 04, 1894 | P.W. Gates, E.E. Hanna, C.L. Carman | Gyrating crusher | ore processing apparatus | |
| 1,400,282 | Dec. 13, 1921 | P.W. Gates | Molding-machine | ore processing apparatus | |