| Patents for Isidore Dreyfus |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 64,956 | May 21, 1867 | I. Dreyfus | Improvement in automatic lubricators | oil cups |
| D3,434 | Mar. 30, 1869 | I. Dreyfus | Design for an oil-cup for journal-boxes | machine lubricators |
| 106,261 | Aug. 09, 1870 | I. Dreyfus | Improvement in lubricators | oil cups |
| 109,118 | Nov. 08, 1870 | I. Dreyfus | Improvement in lubricators | steam engine lubricators |
| 166,080 | Jul. 27, 1875 | I. Dreyfus | Improvement in apparatus for ejecting water | feedwater apparatus |
| 182,180 | Sep. 12, 1876 | I. Dreyfus | Improvement in injectors | feedwater apparatus |
| 237,716 | Feb. 15, 1881 | J. Absterdam | Apparatus for oiling and lubricating the bearings and cylinders of steam-engines | steam engine lubricators |
