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Patents Granted on 1822-01-19
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
3,436X	Jan. 19, 1822	A. Thayer, Jr., J. Lansing, Jr.	Rotary shifting piston steam engine	steam engines
3,437X	Jan. 19, 1822	R. Prouty	Drawing card and other wire

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