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Patents for Carl Borngraeber
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
403,956May 28, 1889L. Metzger, F. PettgeBungauxiliary wrenches
413,681Oct. 29, 1889L. Metzger, F. PettgeBungauxiliary wrenches
485,773Nov. 08, 1892J.W. von PittlerLathemetal lathes
516,286Mar. 13, 1894L. WachtlerPipe Wrenchself-adjust wrenches
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