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发明名称
Light-modifying attachment for lamps used in photography
摘要
申请公布号
US2441489(A)
申请公布日期
1948.05.11
申请号
US19460682731
申请日期
1946.07.11
申请人
HENRY JACOBS
发明人
JACOBS HENRY
分类号
G03B15/03
主分类号
G03B15/03
代理机构
代理人
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地址
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