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| Patents for R. Carmichael | |||||
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| Number | Date | Patentee | Title | Type | |
| RE5,626 | Oct. 21, 1873 | H. Wilde | Improvement in machines for crozing and chamfering staves | barrel making machines | |
| 188,365 | Mar. 13, 1877 | E. Holmes, B. Holmes | Machine for Leveling and Trussing Barrels | barrel making machines | |