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| Patents for Amos Thayer Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,356X | Aug. 08, 1821 | A. Thayer, Jr. | Steam wheel | rotary steam engines | |
| 3,436X | Jan. 19, 1822 | A. Thayer, Jr., J. Lansing, Jr. | Rotary shifting piston steam engine | steam engines | |
| 3,669X | Mar. 06, 1823 | A. Thayer, Jr. | Steam engine | steam engines | |