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| Patents for Henry O. Lothrop | |||||
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| Number | Date | Patentee | Title | Type | |
| 73,415 | Jan. 14, 1868 | H.O. Lothrop | Improvement in steam-engines cut-offs | steam engine governors | |
| 75,034 | Mar. 03, 1868 | H.O. Lothrop | Improvement in steam-engines cut-offs | steam engine governors | |
| 290,250 | Dec. 18, 1883 | H.O. Lothrop | Machine for Shaping Ferrules | metal swaging machines | |