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| Patents for Charles W. Cowtan | |||||
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| Number | Date | Patentee | Title | Type | |
| 31,697 | Mar. 19, 1861 | J. Brakeley | Machine for planing bark | bark processing machines | |
| D1,402 | Apr. 30, 1861 | S.E. Chubbuck | Steam radiator | radiators | |