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| Patents for Parker Bros. | |||||
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| Number | Date | Patentee | Title | Type | |
| 12,723 | Apr. 17, 1855 | D. Fowler | Machine for Punching Metal | stamping presses | |
| RE3,617 | Aug. 24, 1869 | S. Fowler, administrator, M. Fowler, administrator, G. Fowler, D. Fowler, deceased (estate of) | Improved Machine for Punching Metal | stamping presses | |