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Patents Granted on 1810-02-21 | |||||
Number | Date | Patentee | Title | Type | |
1,218X | Feb. 21, 1810 | N. Shaler | System of signals for vessels | ||
1,219X | Feb. 21, 1810 | M.L. Morse | Pendulum scale | ||
1,220X | Feb. 21, 1810 | E. Raymond | Cheese press | cheese press |