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发明名称
Light filter
摘要
申请公布号
US2087802(A)
申请公布日期
1937.07.20
申请号
US19340711390
申请日期
1934.02.15
申请人
DE BAYER-KRUCSAY DEZSO
发明人
BAYER-KRUCSAY DEZSO DE
分类号
G02C7/10
主分类号
G02C7/10
代理机构
代理人
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