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Patents Granted on 1803-04-04 | |||||
Number | Date | Patentee | Title | Type | |
441X | Apr. 04, 1803 | T.H. Rawson | Antibilious pills | medical pills and syrups | |
442X | Apr. 04, 1803 | J. Richardson | Improvement in his evaporating furnace | industrial furnaces |