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All Patents in class 418/225
Patents 1 - 5 of 5
Picture	Number	Date	Patentee	Title
	2,669	Jun. 11, 1842	B. Beale, J.T. Beale	Rotary Steam Engine
	134,294	Dec. 24, 1872	J.C. Lamb, E. Lavens	Improvement in rotary pumps
	249,214	Nov. 08, 1881	W.H. Wigmore	Combined Gas, Air and Steam Rotary Engine
	260,513	Jul. 04, 1882	W.H. Wigmore	Gas Motor Engine
	2,333,304	Nov. 02, 1943	H. Ernst, C. Herfurth, A.H. Dall	Surface Finishing Machinery

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