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Patents for M. P. Dwyer
Patents 1 - 2 of 2
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NumberDatePatenteeTitleType
282,256Jul. 31, 1883E.F. BarnesImprovements in Pipe-Tongs and Wrench Combinedpipe tongs
282,435Jul. 31, 1883E.F. BarnesPipe Cutterpipe cutters
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