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All Patents in class 237/46
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
95,849Oct. 12, 1869B.F. SturtevantHot Air Furnaceindustrial furnaces
100,235Feb. 22, 1870B.F. SturtevantGrain Dryergrain dryers
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