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发明名称
Improvements in or relating to optical units
摘要
申请公布号
GB503751(A)
申请公布日期
1939.04.11
申请号
GB19390007818
申请日期
1937.10.07
申请人
KODAK LIMITED
发明人
分类号
G11B7/00
主分类号
G11B7/00
代理机构
代理人
主权项
地址
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