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All Patents in class 91/358A
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	453,980	Jun. 09, 1891	E.S. Matthews	Hydraulic valve-gear
	876,428	Jan. 14, 1908	J.G. Blessing	Fluid Pressure Operated Grinding Machine
	3,039,441	Jun. 19, 1962	A.F. Hurlburt, J.G. Padelt	Photographic Camera

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