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发明名称
Perfectionnements aux boussoles
摘要
申请公布号
FR1035133(A)
申请公布日期
1953.08.17
申请号
FRD1035133
申请日期
1951.04.06
申请人
发明人
BOUCHET ROBERT-CLAUDE;BURTH CLEMENT-HENRY
分类号
G01C17/00
主分类号
G01C17/00
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代理人
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