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| All Patents in class 241/241.5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 294,673 | Mar. 04, 1884 | E. Rhodes | Grinding-mill | corn grinders | |
| 324,937 | Aug. 25, 1885 | F.A. Huntington | Rock crusher or breaker | ore processing apparatus | |