| Patents for Isidore Dreyfus |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
| | 64,956 | May 21, 1867 | I. Dreyfus | Improvement in automatic lubricators |
 | 86,009 | Jan. 19, 1869 | I. Dreyfus | Lubricating Cup |
| | D3,434 | Mar. 30, 1869 | I. Dreyfus | Design for an oil-cup for journal-boxes |
 | 106,261 | Aug. 09, 1870 | I. Dreyfus | Improvement in lubricators |
 | 109,118 | Nov. 08, 1870 | I. Dreyfus | Improvement in lubricators |
 | 166,080 | Jul. 27, 1875 | I. Dreyfus | Improvement in apparatus for ejecting water |
 | 182,180 | Sep. 12, 1876 | I. Dreyfus | Improvement in injectors |
 | 237,716 | Feb. 15, 1881 | J. Absterdam | Apparatus for oiling and lubricating the bearings and cylinders of steam-engines |
