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Patents for Hetherington & Berner
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
186,795Jan. 30, 1877J.W. CalkinsImprovement in machines for sawing lathslath making machines
335,335Feb. 02, 1886E.M. ByrkitDovetailing-machinespecialty woodworking machines
335,336Feb. 02, 1886E.M. ByrkitSaw-mandrelcircular saws
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