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| US5014484 | 8 mars 1988 | 14 mai 1991 | Mitsubishi Denki Kabushiki Kaisha | Module for expandable truss structure and expandable truss structure employing said module | | US5640984 | 12 sept. 1995 | 24 juin 1997 | | Special fold-up umbrella having rib and frame design for easier opening and closing of umbrella, and two canopies designed to stabilize the ribs and vent the air |
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