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Patents for Horace C. Heon
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,522,720Jan. 13, 1925H.C. HeonCylinder-grinding toolcylinder maintenance
1,774,711Sep. 02, 1930H.C. HeonCylinder-grinding toolautomotive tools
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