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All Patents in class 451/484
Patents 1 - 4 of 4
First set of recordsLast set of records
NumberDatePatenteeTitleType
38,153Apr. 14, 1863G. CowingPolishing Metal Cylinderspolishing and buffing machinery
1,083,452Jan. 06, 1914N.C. MarkhamGrinder and Polisher for Car Journalsgrinding machines
1,522,720Jan. 13, 1925H.C. HeonCylinder-grinding toolcylinder maintenance
1,774,711Sep. 02, 1930H.C. HeonCylinder-grinding toolautomotive tools
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