Patents Granted on 1821-12-11


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Patents Granted on 1821-12-11
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
3,419X	Dec. 11, 1821	E. Walcott	Making cotton yarn without the aid of twist
3,420X	Dec. 11, 1821	E. Warren	Loom	looms