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All Patents in class 346/118
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	615,161	Nov. 29, 1898	T. Gray	Continuous Engine Indicator
	1,028,154	Jun. 04, 1912	W.L. Trill	Continuous Indicator for Engines
	1,352,150	Sep. 07, 1920	E. Schneider	Recorder for Fluid Pressure Presses

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