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| Patents for R. C. McEwan | |||||
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| Number | Date | Patentee | Title | Type | |
| 421,663 | Feb. 18, 1890 | M.S. Browning, J.M. Browning | Magazine fire-arm | shotguns | |
| 441,390 | Nov. 25, 1890 | M.S. Browning, J.M. Browning | Magazine-gun | shotguns | |