All Patents in class 426/474


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All Patents in class 426/474
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
1,469,581	Oct. 02, 1923	B. Brazelle	Producing "Aquazone" quack medicine
2,072,691	Mar. 02, 1937	R.E. Stark	Aerating apparatus
2,116,541	May 10, 1938	L. Roush, C. Riedel	Method for aerating liquids