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