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| Patents for Robert MacGregor | |||||
| Number | Date | Patentee | Title | Type | |
| 3,913,450 | Oct. 21, 1975 | R. MacGregor | Hydraulic control system for press brakes or the like | sheet metal brakes | |
| 4,170,124 | Oct. 09, 1979 | R. MacGregor | Hydraulic control system for press brakes and the like | sheet metal brakes | |