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经营范围
发明名称
Optical filtering devices
摘要
申请公布号
GB1139425(A)
申请公布日期
1969.01.08
申请号
GB19660008609
申请日期
1966.02.28
申请人
BECKMAN INSTRUMENTS INC.
发明人
分类号
G02B5/20
主分类号
G02B5/20
代理机构
代理人
主权项
地址
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