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发明名称
CHANGEABLE EXHIBITOR
摘要
申请公布号
US3619922(A)
申请公布日期
1971.11.16
申请号
USD3619922
申请日期
1969.07.15
申请人
ESTHER A. MORGAN;DAVID MORGAN
发明人
ESTHER A. MORGAN;DAVID MORGAN
分类号
G09F11/34;(IPC1-7):G09F11/26
主分类号
G09F11/34
代理机构
代理人
主权项
地址
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