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All Patents in class 411/436
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
135,898Feb. 18, 1873T. EnglishScrew Bolts and Nutsnuts and bolts
413,316Oct. 22, 1889W.J. DobsonCounterbore Auger Attachmentdrill accessories
447,775Mar. 10, 1891C.A. HigbeeScrew bolt and nutfirefighting tools
658,085Sep. 18, 1900C.A. HigbeeScrew-couplingindustrial machine shaft couplings
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