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| Patents for James A. Seymour | |||||
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| Number | Date | Patentee | Title | Type | |
| 402,622 | May 07, 1889 | J.E. McIntosh, J.A. Seymour | Steam Engine | steam engines | |
| 417,515 | Dec. 17, 1889 | J.A. Seymour | Governor for Steam Engines | steam engine governors | |
| 707,792 | Aug. 26, 1902 | J.A. Seymour, J.E. McIntosh | Adjuster for Centrifugal Governors | steam engine governors | |