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Patents for Frank Drew Winkley | |||||
Number | Date | Patentee | Title | Type | |
552,737 | Jan. 07, 1896 | F.D. Winkley | Oil-cup | bicycles and tricycles | |
1,066,238 | Jul. 01, 1913 | F.D. Winkley | Lubricator | tool lubricators | |
1,201,414 | Oct. 17, 1916 | F.D. Winkley | Lubricating system | motor vehicles |