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| All Patents in class 180/219 | |||||
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| Number | Date | Patentee | Title | Type | |
| 570,440 | Oct. 27, 1896 | E.J. Pennington | Motor vehicle | bicycles and tricycles | |
| 2,358,671 | Sep. 19, 1944 | W.H. Trippe | Detachable Power Unit Using Solid Fuel for Bicycles | bicycles and tricycles | |