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| Patents for George E. Colvin | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-33,896 | Mar. 12, 1890 | G.E. Colvin, R.B. Stewart | Compound Tool Chiefly Designed As A Hitching Device For Horses | combination tools | |
| 460,094 | Sep. 22, 1891 | R.B. Stewart | Portable Hitching Post | hammers | |