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经营范围
发明名称
Perfectionnements aux compas magnétiques
摘要
申请公布号
FR816942(A)
申请公布日期
1937.08.20
申请号
FRD816942
申请日期
1937.01.27
申请人
ANCIENS ETABLISSEMENTS BARBIER, BENARD & TURENNE
发明人
分类号
G01C17/00
主分类号
G01C17/00
代理机构
代理人
主权项
地址
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