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发明名称
Perfectionnement aux filtres de couleur et aux polarisateurs plus particulièrement destinés à la télévision
摘要
申请公布号
FR946970(A)
申请公布日期
1949.06.20
申请号
FRD946970
申请日期
1947.05.20
申请人
INTERNATIONAL POLAROID CORPORATION
发明人
分类号
G02B27/28;G02F1/23
主分类号
G02B27/28
代理机构
代理人
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地址
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