发明授权
US4498657A Sign standard for supporting and displaying a sign 失效
签署支持和显示标志的标准

Sign standard for supporting and displaying a sign
摘要:
A sign standard in which flexible means for permitting resilient lateral displacement of the sign is mounted closely below the sign, and means for adjusting the height of the sign above the ground, or other surface or a base, is disclosed.
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