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All Patents in class 277/522
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
RE254Jan. 10, 1854C.W. Noyes, T.W. AllenPiston-Rod Packingpiston ring and packing
RE255Jan. 10, 1854J. Judson, A. JudsonImproved governor-valve for steam-enginessteam engine governors
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