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US07225569B2 Flexible frame and mutually engageable fastening means 失效
柔性框架和相互啮合的紧固装置

Flexible frame and mutually engageable fastening means
摘要:
A flexible frame for an advertising panel is described. The flexible frame has a mutually engageable fastening means, especially, but not exclusively for attachment to a vehicle. The flexible frame could alternatively be attached to a fixed structure.
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