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| Patents for Charles Gilpin | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 82,399 | Sep. 22, 1868 | L.T. Dickinson, C. Gilpin | Improvement in rossing-machines | |
 | 82,400 | Sep. 22, 1868 | L.T. Dickinson, C. Gilpin | Improvement in rossing-machines | |
 | 109,199 | Nov. 15, 1870 | C. Gilpin | Improvement in feed-rolls for rossing-machines | |
 | 128,612 | Jul. 02, 1872 | J.T. Hill, C. Gilpin | Improvement in machines for rossing bark | |