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All Patents in class 278/75
Patents 1 - 3 of 3
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NumberDatePatenteeTitleType
591,561Oct. 12, 1897H.A. Moyer, C.J. GrafThill-coupling
610,768Sep. 13, 1898H.A. Moyer, C.J. GrafThill-coupling
636,831Nov. 14, 1899H.A. MoyerThill-coupling
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