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发明名称
Multiimage sign
摘要
申请公布号
US2117187(A)
申请公布日期
1938.05.10
申请号
US19370137650
申请日期
1937.04.19
申请人
MACLAREN WILLIAM E
发明人
MACLAREN WILLIAM E.
分类号
G09F11/02
主分类号
G09F11/02
代理机构
代理人
主权项
地址
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