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| Patents Granted on 1819-02-27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,080X | Feb. 27, 1819 | J. Bartholomew | Improvement in the steelyard | steel maker | |
| 3,081X | Feb. 27, 1819 | J. Perkins | Progressive lever press | lever presses | |