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All Patents in class 451/484
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
38,153Apr. 14, 1863G. CowingPolishing Metal Cylinderspolishing and buffing machinery
1,522,720Jan. 13, 1925H.C. HeonCylinder-grinding toolautomotive tools
1,774,711Sep. 02, 1930H.C. HeonCylinder-grinding toolautomotive tools
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