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All Patents in class 91/264
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
162,714Apr. 27, 1875J.W. ThompsonBalanced and Cut-Off Valve
RE8,434Sep. 24, 1878J.W. ThompsonImprovement in Balanced and Cut-Off Valves
334,690Jan. 19, 1886A. CraikBalanced Valvesteam engine valves
364,207Jun. 07, 1887C.W. BarnabySteam-engine valvesteam engine valves
384,637Jun. 19, 1888J.E. McIntoshValve for Steam Enginessteam engine valves
533,177Jan. 29, 1895A.K. MansfieldCut-off-valve mechanismsteam engine valves
2,000,553May 07, 1935C.R. AldenMachine toolhorizontal boring mills
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