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| Patents for John A. Seaman | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 26,206 | Nov. 22, 1859 | J.A. Seaman | Machine for chamfering and crozing kegs or casks | |
| 189,878 | Apr. 24, 1877 | J.A. Seaman | Improvement in crozing and howeling machines | ||
 | 203,564 | May 14, 1878 | J.A. Seaman | Improvement in stave-jointing machines | |
 | 203,654 | May 14, 1878 | J.A. Seaman | Improvement in stave-jointing machines | |