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| Patents for William S. Hamm | |||||
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| Number | Date | Patentee | Title | Type | |
| 680,346 | Aug. 13, 1901 | W.S. Hamm, J.A. Mosher | Piping System for Gas Distribution | plumber | |
| 690,173 | Dec. 31, 1901 | W.S. Hamm, J.A. Mosher | Acetylene Gas Generator | acetylene gas generators | |
| 705,078 | Jul. 22, 1902 | J.A. Mosher, W.S. Hamm | Acetylene Gas Generator | acetylene gas generators | |
| 805,722 | Nov. 28, 1905 | J.A. Mosher, W.S. Hamm | Lamp | railroad car lamps | |