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All Patents in class 235/61C
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,896,527	Feb. 07, 1933	C.R. Houghton	Tandem meter
	2,228,068	Jan. 07, 1941	E.J. White	Integrating Apparatus
	2,860,430	Nov. 18, 1958	J.H. McKewen	Prescheduling Means for Machine Tool

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