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| Patents for Henry Waterman | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,964 | Mar. 04, 1851 | H. Waterman | Variable Cut-Off Regulated by the Governor | steam engine governors | |
| 8,115 | May 27, 1851 | H. Waterman | Machinery for hardening and straightening saws, &c. | making sawblades | |