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Patents for Robert Karcher
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,100,760Jun. 23, 1914S. MorelliPipe Cutting Toolpipe cutting machines
1,184,947May 30, 1916J.A. Gossett, J.C. HewittPipe-forming machinepipe making machines
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