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| Patents for Robert B. Williamson | |||||
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| Number | Date | Patentee | Title | Type | |
| 967,474 | Aug. 16, 1910 | R.B. Williamson | Brush-holder | motor brush holders | |
| 1,121,545 | Dec. 15, 1914 | R.B. Williamson | Dynamo-electric machine | electric motors | |