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| Patents for Isaac Hiett | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,562X | Jun. 13, 1831 | W. Bryant, I. Hiett | Rail-way carriage (Railway car) | ||
| 6,563X | Jun. 13, 1831 | I. Hiett, J. Case | Propelling machinery and driving mill stones without cogs | ||