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Patents for B. H. Chertok
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
1,151,959Aug. 31, 1915A.A. McKenzieFolding supporting-frame for portable hand-viseswoodworkers vises
1,186,671Jun. 13, 1916A.A. McKenzieQuick-acting visewoodworkers vises
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