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| All Patents in class D15/150 | |||||
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| Number | Date | Patentee | Title | Type | |
| D3,434 | Mar. 30, 1869 | I. Dreyfus | Design for an oil-cup for journal-boxes | machine lubricators | |
| 1,307,734 | Jun. 24, 1919 | A.V. Gullborg | Lubricating Means | oil cups | |