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Patents for Harry E. Siverson
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
2,798,381Jul. 09, 1957H.E. SiversonChain constructionother wood sawing machines
RE24,475May 20, 1958H.E. SiversonChain constructionother wood sawing machines
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