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Patents for H. S. Johnson
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
81,497Aug. 25, 1868H.H. HallImprovement in Box Openers
517,073Mar. 27, 1894J.D. SloanMicrometer Calipersmicrometers
552,351Dec. 31, 1895C. CristadoroDovetail-mortising machinedovetailing machines
877,352Jan. 21, 1908H. LundCylinder Wrench
877,465Jan. 21, 1908H. LundCylinder Wrenchcylinder tooth wrenches
878,657Feb. 11, 1908A. MunchRatchet Wrench
1,261,432Apr. 02, 1918S.E. ParslowMilling Machinemilling machines
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