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Patents for William Schollhorn
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
51,967Jan. 09, 1866W. Schollhorn, F.P. PflegharImprovement in Compasses and Caliperscalipers
140,081Jun. 17, 1873W. SchollhornImprovement in pencil attachmentsdividers
350,702Oct. 12, 1886W. SchollhornCorkscrewT corkscrews and other straight corkscrews
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