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发明名称
Light reflecting device
摘要
申请公布号
US2123478(A)
申请公布日期
1938.07.12
申请号
US19360068095
申请日期
1936.03.10
申请人
FREDERICK SMITH HOBART
发明人
SMITH HOBART FREDERICK
分类号
G08B5/00
主分类号
G08B5/00
代理机构
代理人
主权项
地址
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