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Patents for Charles B. Sprague
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,344,096Jun. 22, 1920C.B. SpragueResawing-machineband resaws
1,436,208Nov. 21, 1922C.B. SpragueSawmill hogwood grinding machines
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