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| Patents for George J. Colby | |||||
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| Number | Date | Patentee | Title | Type | |
| 21,740 | Oct. 12, 1858 | G.J. Colby | Machine for peeling willow | debarking machines | |
| RE1,991 | Jun. 13, 1865 | G.J. Colby | Machine for peeling willows | debarking machines | |