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All Patents in class 92/207
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
31,303Feb. 05, 1861T.S. DavisSteam Engine Valvesteam engine pistons
114,427May 02, 1871P. EstesImprovement in Piston-Packingspiston ring and packing
RE6,128Nov. 10, 1874T.S. DavisPiston Packingspiston ring and packing
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