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| Patents for Hunt, Helm, Ferris & Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 481,349 | Aug. 23, 1892 | H.L. Ferris | Hay-carrier track | |
 | 598,563 | Feb. 08, 1898 | H.L. Ferris | Feed-box | |
 | 702,295 | Jun. 10, 1902 | H.L. Ferris | Wire Stretcher | |
 | 740,637 | Oct. 06, 1903 | H.L. Ferris | Snapping-rolls | |
 | 795,902 | Aug. 01, 1905 | H.L. Ferris | Fork-pulley frame | |
 | 835,185 | Nov. 06, 1906 | H.L. Ferris | Hay-carrier | |
 | 835,785 | Nov. 13, 1906 | H.J. Ferris | Wagon | |
 | 1,025,527 | May 07, 1912 | E.B. Hunt | Hanger for litter-carriers | |
 | 1,122,711 | Dec. 29, 1914 | H.J. Ferris | Stanchion | |