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Patents for Matthias Mengel
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
19,928Apr. 13, 1858S. HollHub-boring machinedrilling and boring
84,111Nov. 17, 1868A.C. GrethWrenchpipe jaw attachments for wrenches
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