Patents Granted on 1815-03-30


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Patents Granted on 1815-03-30
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
2,283X	Mar. 30, 1815	L.M. Richards	Boiler	stationary boilers
2,284X	Mar. 30, 1815	J. Mason	Machine for cutting and heading screws	screw machines