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Patents for Hart Emery Wheel Co.
Patents 1 - 5 of 5
First set of recordsLast set of records
NumberDatePatenteeTitleType
201,778Mar. 26, 1878G. HartEmery Wheelgrinding wheels
226,066Mar. 30, 1880G. HartEmery-wheelgrinding wheels
275,561Apr. 10, 1883S.T. WrayPolishing or buffing wheelgrinding wheels
338,787Mar. 30, 1886S.C. RogersSaw-filing machinesharpening machines
RE10,937Jun. 05, 1888S.C. RogersSaw-filing machinesaw sharpening machines
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