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| Patents for J. Henry Hill | |||||
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| Number | Date | Patentee | Title | Type | |
| 142,771 | Sep. 16, 1873 | L. Coes | Improvement in the Manufacture of Wrench-Heads | tool making machines | |
| 142,936 | Sep. 16, 1873 | S.W. Nelson | Improvement in planing-machines | wood planers | |
| 154,680 | Sep. 01, 1874 | B.F. Joslyn | Wrenches | nut wrenches | |
| RE7,085 | Apr. 25, 1876 | C.B. Morse | Improvement in ring spinning-frames | ||
| 259,010 | Jun. 06, 1882 | W.M. Hall | Cutter for wood-splitting machines | cutters | |
| 292,438 | Jan. 22, 1884 | G. Layng | Yarn Reel | yarn reels | |