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发明名称
Camera flash-light attachment
摘要
申请公布号
US1945942(A)
申请公布日期
1934.02.06
申请号
US19320605577
申请日期
1932.04.16
申请人
LANG GEORGE L
发明人
LANG GEORGE L.
分类号
G03B15/04
主分类号
G03B15/04
代理机构
代理人
主权项
地址
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