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发明名称
Perfectionnements aux appareils indicateurs, transmetteurs de directions et en particulier, aux compas magnétiques et à leur compensation
摘要
申请公布号
FR1019537(A)
申请公布日期
1953.01.22
申请号
FRD1019537
申请日期
1950.06.06
申请人
发明人
BELLON FRANCOIS-BAPTISTIN
分类号
G01C17/36
主分类号
G01C17/36
代理机构
代理人
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