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All Patents in class 417/552
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
6,500Jun. 05, 1849B. HollyPumppumps
RE168May 07, 1850B. HollyImprovement in Pumpspumps
45,040Nov. 15, 1864B. HollyPump Liftpumps
137,765Apr. 15, 1873R. DudgeonImprovement in hydraulic jackshydraulic jacks
162,044Apr. 13, 1875E.M. DudgeonImprovement in hydraulic jackshydraulic jacks
302,070Jul. 15, 1884T.H. WatsonHydraulic jackhydraulic jacks
1,472,062Oct. 30, 1923A.F. FroussardPumpair pumps
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