Patents for Carl Roy Houghton


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Patents for Carl Roy Houghton
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	1,087,906	Feb. 17, 1914	C.R. Houghton	Relief-valve
	1,101,493	Jun. 23, 1914	C.R. Houghton	Combination-pump
	1,232,464	Jul. 03, 1917	C.R. Houghton	Dust-separator