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发明名称
ébauche de lentille optique à double foyer ainsi que procédé pour sa fabrication
摘要
申请公布号
FR1514223(A)
申请公布日期
1968.02.23
申请号
FR19660089373
申请日期
1966.12.29
申请人
UNIVIS, INC.
发明人
分类号
B24B13/00;G02C7/06
主分类号
B24B13/00
代理机构
代理人
主权项
地址
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