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经营范围
发明名称
Diaphragme pour la photographie et la cinématographie
摘要
申请公布号
FR850962(A)
申请公布日期
1939.12.30
申请号
FRD850962
申请日期
1938.09.09
申请人
发明人
SANDOZ EDOUARD, MARCEL
分类号
G03B9/08;G03C7/14
主分类号
G03B9/08
代理机构
代理人
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