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| Patents Granted on 1821-06-26 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,346X | Jun. 26, 1821 | R. Winans | Fulling cloth | ||
| 3,347X | Jun. 26, 1821 | S. Stillwell | Water and steam still boiler | stationary boilers | |