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| Patents for William S. Andrews | |||||
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| Number | Date | Patentee | Title | Type | |
| 17,378 | May 26, 1857 | W.A. Jarratt | Shingle-machine | shingle machines | |
| 465,512 | Dec. 22, 1891 | W.S. Andrews, A.K. Warren | Rheostat | motor controls | |
| 559,349 | May 05, 1896 | W.S. Andrews | Rheostat | rheostats | |