Patents for Edward Douglas


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Patents for Edward Douglas
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	244,384	Jul. 19, 1881	J.W. Douglas	Pump
	363,321	May 17, 1887	E. Douglas	Folding Square
	386,115	Jul. 17, 1888	E. Douglas	Telescopic stop-cock for water-service