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| Patents for Dwight A. Hill | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,898,068 | Aug. 04, 1959 | D.A. Hill, O.F. Colbert | Support having three axes of adjustment and a single locking handle | vises | |
| 3,661,376 | May 09, 1972 | O.F. Colbert, D.A. Hill | Support having three axes of adjustment and a single locking handle | vises | |