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| Patents for Thomas S. Watson | |||||
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| Number | Date | Patentee | Title | Type | |
| 649,972 | May 22, 1900 | T.S. Watson | Electric-motor-controlling device | dental apparatus | |
| 792,684 | Jun. 20, 1905 | T.S. Watson | Electric motor | electric motors | |
| CA-275,069 | Nov. 01, 1927 | T.S. Watson | Motor-controlling device | motor controls | |