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经营范围
发明名称
Perfectionnement aux appareils de projection
摘要
申请公布号
FR64444(E)
申请公布日期
1955.11.10
申请号
FRD64444
申请日期
1953.07.01
申请人
发明人
PLOCQ ALBERIC
分类号
G03B21/00
主分类号
G03B21/00
代理机构
代理人
主权项
地址
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