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发明名称
Reflecting device
摘要
申请公布号
US1914421(A)
申请公布日期
1933.06.20
申请号
US19310546929
申请日期
1931.06.26
申请人
RAY-SIGNS CORPORATION
发明人
JR. JOHN C. HAGGART,
分类号
G09F13/16
主分类号
G09F13/16
代理机构
代理人
主权项
地址
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