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All Patents in class 137/522
Patents 1 - 8 of 8
First set of recordsLast set of records
NumberDatePatenteeTitleType
7,886Jan. 07, 1851W. MaguireMachine for jointing stavesbarrel making machines
59,764Nov. 20, 1866C.M. FarrarImprovement in Lock-Up Safety Valvesteam safety valves
90,278May 18, 1869J. LinnardSafety Valvesteam safety valves
206,589Jul. 30, 1878F. LunkenheimerSafety-Valvesteam safety valves
571,498Nov. 17, 1896E. RappeGas Enginegas and gasoline engines
920,472May 04, 1909W.E. JerauldTesting Attachment for Spring Loaded Valvestesting machines
1,865,560Jul. 05, 1932G.B. DuffieldPop Valvesteam safety valves
2,101,682Dec. 07, 1937E. KlafstadRelief Valvesteam safety valves
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