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All Patents in class 313/143
Patents 1 - 4 of 4
Picture	Number	Date	Patentee	Title
	RE10,878	Nov. 01, 1887	J.C. Beckfeld, A. Schmid	Gas Engine
	424,027	Mar. 25, 1890	E.F. Roberts	Igniting Apparatus for Gas Engines
	925,239	Jun. 15, 1909	F.W. Smith	Spark Plug
	1,401,585	Dec. 27, 1921	V.D. Collins, A.F. Collins	Spark Plug

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