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| Patents for Hunt, Helm & Ferris | |||||
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| Number | Date | Patentee | Title | Type | |
| 481,349 | Aug. 23, 1892 | H.L. Ferris | Hay-carrier track | hay or straw carriers | |
| 598,563 | Feb. 08, 1898 | H.L. Ferris | Feed-box | ||