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| Patents for Roy L. Watson | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,183,012 | May 11, 1965 | R.L. Watson | Crankshaft chuck | vehicle mechanic | |
| CA-744,900 | Oct. 25, 1966 | R.L. Watson | Crankshaft chuck | vehicle mechanic | |