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Patents for De Witt C. Laurence
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
779Jun. 12, 1838R. LuscombeMachine for planing boardswood planers
9,072Jun. 29, 1852G. HotchkissHanging steps of mill-spindles
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