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发明名称
Principes et dispositifs optiques applicables au film gaufré
摘要
申请公布号
FR1012334(A)
申请公布日期
1952.07.08
申请号
FRD1012334
申请日期
1949.07.13
申请人
发明人
BERTHON ROLAND
分类号
G03B33/10
主分类号
G03B33/10
代理机构
代理人
主权项
地址
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