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| Patents for Robert A. Williams | |||||
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| Number | Date | Patentee | Title | Type | |
| 171,899 | Jan. 04, 1876 | R.A. Williams | Improvement in mitering-machines | specialty woodworking machines | |
| 5,255,549 | Oct. 26, 1993 | R.A. Williams | Tension leveler roll cleaning system and method | ||