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| Patents for Lewis H. Watson | |||||
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| Number | Date | Patentee | Title | Type | |
| 113,954 | Apr. 18, 1871 | L.H. Watson | Barrel Filler | barrel fillers | |
| 161,581 | Mar. 30, 1875 | L.H. Watson | Forge-Blower | forge blowers | |
| 183,088 | Oct. 10, 1876 | L.H. Watson | Portable Forge | forge blowers | |
| 211,309 | Jan. 14, 1879 | L.H. Watson | Automatic-Governor and Cut-Off | steam engine governors | |