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| Patents for Fred A. Parsons | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,493,828 | Jan. 10, 1950 | F.A. Parsons | Machine Tool Transmission and Control Mechanism | milling machines | |
| 2,521,185 | Sep. 05, 1950 | F.A. Parsons | Machine Tool Transmission and Control Mechanism | milling machines | |
| 2,589,204 | Mar. 11, 1952 | F.A. Parsons | Copying Machine | copy milling machines | |