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Patents for I. Dreyfus
Patents 1 - 4 of 4
First set of recordsLast set of records
64,956May 21, 1867I. DreyfusImprovement in automatic lubricatorsoil cups
D3,434Mar. 30, 1869I. DreyfusDesign for an oil-cup for journal-boxesmachine lubricators
106,261Aug. 09, 1870I. DreyfusImprovement in lubricatorsoil cups
109,118Nov. 08, 1870I. DreyfusImprovement in lubricatorssteam engine lubricators
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