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| All Patents in class 384/408 | |||||
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| Number | Date | Patentee | Title | Type | |
| 280,569 | Jul. 03, 1883 | F. Brown | Lubricator for journals | industrial machine lubrication | |
| 831,554 | Sep. 25, 1906 | F.G. Hobart | Bearing for Windmill Shafts | wind power apparatus | |
| 2,402,205 | Jun. 18, 1946 | C.H. Phelps | V-bearing | balancing machinery | |