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All Patents in class 418/131
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	465,907	Dec. 29, 1891	W.N. Whipple	Rotary Steam Engine
	5,417,555	May 23, 1995	W.G. Kuban, I.E. Wolfe, D.J. Luoma	Rotary vane machine having end seal plates

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