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Patents Granted on 1820-03-16 | |||||
Number | Date | Patentee | Title | Type | |
3,182X | Mar. 16, 1820 | M.M. Duplat | Construction of privies | ||
3,183X | Mar. 16, 1820 | R. Eastman, J. Jaquith | Circular saw for making clap boards | clapboard machines |