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This patent by August Keller of Dearborn, Michigan describes a vehicle top of collapsible or folding type. It has seven linkages and ten revolute joints ; with one degree of freedom. Application date May 1938.
Immagini: Vehicle Top, US-Patent No. US000002255289A
| Date | : | 18.04.2013 |
| Location | : | Rheinisch-Westfälische Technische Hochschule Aachen, Germany |
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