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发明名称
Electric sign
摘要
申请公布号
US1986705(A)
申请公布日期
1935.01.01
申请号
US19330695042
申请日期
1933.10.24
申请人
ETHICAL DISPLAY CO., INC.
发明人
BERNSTEIN MORRIS;DUBROFF HAROLD C.
分类号
G09F13/14
主分类号
G09F13/14
代理机构
代理人
主权项
地址
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