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发明名称
Sign construction
摘要
申请公布号
US2188437(A)
申请公布日期
1940.01.30
申请号
US19380236630
申请日期
1938.10.24
申请人
JOYCE LUKE W
发明人
JOYCE LUKE W.
分类号
G09F7/18
主分类号
G09F7/18
代理机构
代理人
主权项
地址
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