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经营范围
发明名称
Niveau à éclairage électrique
摘要
申请公布号
FR1283860(A)
申请公布日期
1962.02.09
申请号
FR19600843903
申请日期
1960.11.15
申请人
发明人
CHAUVIN EMILE;LEIBER ROBERT
分类号
G01C9/32
主分类号
G01C9/32
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代理人
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