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| Patents for George H. Cannon | |||||
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| Number | Date | Patentee | Title | Type | |
| 215,293 | May 13, 1879 | D.C. Prescott | Improvement in balanced valves for steam-engines | steam engine valves | |
| 226,350 | Apr. 06, 1880 | D.C. Prescott | Reciprocating-saw mill | reciprocating sawmills | |
| 301,153 | Jul. 01, 1884 | D.C. Prescott | Hoisting apparatus | hoists, winches, come-alongs | |