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All Patents in class 60/729
Patents 1 - 3 of 3
Picture	Number	Date	Patentee	Title
	38,866	Jun. 09, 1863	S.H. Roper	Hot Air Engine
	90,128	May 18, 1869	P. Shaw	Hot Air Engine
	611,125	Sep. 20, 1898	H.A. Humphrey	Gas or Oil Motor Engine

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