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发明名称
Light trap
摘要
申请公布号
US2844991(A)
申请公布日期
1958.07.29
申请号
US19540430005
申请日期
1954.05.14
申请人
BADGLEY GERALD J
发明人
BADGLEY GERALD J.
分类号
G03B19/04
主分类号
G03B19/04
代理机构
代理人
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