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Patents for Nelson F. Beckwith
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
122,215Dec. 26, 1871N.F. BeckwithImprovement in head-blockssawmill headblocks
155,408Sep. 29, 1874N.F. BeckwithImprovement in head-blocks for sawmillssawmill headblocks
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