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Patents Granted on 1803-03-07 | |||||
Number | Date | Patentee | Title | Type | |
428X | Mar. 07, 1803 | J. DeMontmollin, W. Bell | Roller cotton gin | cotton gins | |
429X | Mar. 07, 1803 | J. Naylor | Improvement in Extracting a Spirit From Starch Water | distilling | |
430X | Mar. 07, 1803 | S. Bent | Wheel to turn under water | water wheels |