All Patents in class 261/121.2


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All Patents in class 261/121.2
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,864,149	Jun. 21, 1932	S.P. Rockwell	Agitator for hardening baths
	2,074,597	Mar. 23, 1937	R.E. Stark	Aerating apparatus