All Patents in class 417/564


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All Patents in class 417/564
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,428,402	Sep. 05, 1922	G.F. Steedman	Reciprocating Pump or Compressor
	1,708,158	Apr. 09, 1929	E.H. Stedman	Valve structure for compressors