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发明名称
Optical device for obtaining a narrowly limited luminous surface
摘要
申请公布号
GB439107(A)
申请公布日期
1935.11.25
申请号
GB19340012477
申请日期
1934.04.25
申请人
I.G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
G03B21/20
主分类号
G03B21/20
代理机构
代理人
主权项
地址
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