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Patents for Isidore Dreyfus
Patents 1 - 7 of 7
First set of recordsLast set of records
NumberDatePatenteeTitleType
64,956May 21, 1867I. DreyfusImprovement in automatic lubricatorslubricators
D3,434Mar. 30, 1869I. DreyfusDesign for an oil-cup for journal-boxesmachine lubricators
106,261Aug. 09, 1870I. DreyfusImprovement in lubricatorslubricators
109,118Nov. 08, 1870I. DreyfusImprovement in lubricatorssteam engine lubricators
166,080Jul. 27, 1875I. DreyfusImprovement in apparatus for ejecting waterfeedwater apparatus
182,180Sep. 12, 1876I. DreyfusImprovement in injectorsfeedwater apparatus
237,716Feb. 15, 1881J. AbsterdamApparatus for oiling and lubricating the bearings and cylinders of steam-enginessteam engine lubricators
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