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All Patents in class 137/522
Patents 1 - 4 of 4
First set of recordsLast set of records
7,886Jan. 07, 1851W. MaguireMachine for jointing stavesbarrel making machines
59,764Nov. 20, 1866C.M. FarrarImprovement in Lock-Up Safety Valvesteam safety valves
206,589Jul. 30, 1878F. LunkenheimerSafety-Valvesafety valves
571,498Nov. 17, 1896E. RappeGas Enginegas and gasoline engines
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