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| Patents for Henry Allen | |||||
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| Picture | Number | Date | Patentee | Title | |
| 3,278X | Dec. 30, 1820 | H. Allen | Current and Tide Mill | ||
| 9,683X | Jun. 02, 1836 | H. Allen | Mower | ||
| 9,684X | Jun. 02, 1836 | H. Allen | Water wheel | ||
| 9,721X | Jun. 16, 1836 | H. Allen | Cotton planter | ||
| 5,718 | Aug. 22, 1848 | H. Allen | Governor | ||
 | 10,768 | Apr. 11, 1854 | H. Allen | Boring and mortising machine | |
 | 11,006 | Jun. 06, 1854 | H. Allen | Machine for dressing polygonal timber | |