发明名称 Sign board
摘要 Front and rear sign board panels are releasably held together in slightly spaced relationship by magnet strips. The strips also cooperate with the panels to define at least one pocket which includes an opening for receiving an indicia bearing member.
申请公布号 US4475300(A) 申请公布日期 1984.10.09
申请号 US19820350065 申请日期 1982.02.18
申请人 LEDENICAN, ROBERT L. 发明人 LEDENICAN, ROBERT L.
分类号 G09F7/10;(IPC1-7):G09F7/04 主分类号 G09F7/10
代理机构 代理人
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