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经营范围
发明名称
Procédé de fabrication de supports pour films
摘要
申请公布号
FR923981(A)
申请公布日期
1947.07.23
申请号
FRD923981
申请日期
1946.02.15
申请人
DESCHAMPS & PREVOST
发明人
分类号
G03B21/64
主分类号
G03B21/64
代理机构
代理人
主权项
地址
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