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| Patents for William C. Keyes | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,364,626 | Jan. 23, 1968 | W.C. Keyes | Belt sanding and polishing machines | sanding machines | |
| 3,400,493 | Sep. 10, 1968 | W.C. Keyes | Belt sanding and polishing machine | sanding machines | |