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All Patents in class 285/330
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	487,829	Dec. 13, 1892	W.R. England	Pipe-Coupling
	1,998,653	Apr. 23, 1935	T. Briegel	Tube jointing machine
	2,017,154	Oct. 15, 1935	E.T. Larkin	Valve Seat Construction for Engines and the Like

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