All Patents in class 277/487


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All Patents in class 277/487
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	74,750	Feb. 25, 1868	S.E. Chubbuck, I.Y. Chubbuck	Improvement in pistons
	924,789	Jun. 15, 1909	J. Rigg, J. Jones	Packing Device for Pistons, Piston Valves and the Like