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| All Patents in class 141/382 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,307,734 | Jun. 24, 1919 | A.V. Gullborg | Lubricating Means | oil cups | |
| 1,463,861 | Aug. 07, 1923 | F.D. Winkley | Lubricating apparatus | industrial machine lubrication | |