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Flat advertisement device and its use in sports arena
Flat advertisement device and its use in sports arena
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机译:平面广告装置及其在体育界的应用
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摘要
A flat advertising device for placing on the ground, of the type having deformed graphic elements for better viewing by an observer, said graphic element being deformed only along one axis, Characterized in that the deformation consists of less than 100% elongation.
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