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发明名称
Sign structure
摘要
申请公布号
US2129651(A)
申请公布日期
1938.09.13
申请号
US19350036026
申请日期
1935.08.13
申请人
CUNNINGHAM LYMAN E
发明人
CUNNINGHAM LYMAN E.
分类号
G09F7/08
主分类号
G09F7/08
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代理人
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