All Patents in class 112/171


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All Patents in class 112/171
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
12,247	Jan. 16, 1855	H.B. Smith	Improvement in sewing-machines
16,436	Jan. 20, 1857	E. Howe, Jr.	Sewing Machine	sewing machines