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发明名称
Dispositif d'ancrage à coquille expansible
摘要
申请公布号
FR1092484(A)
申请公布日期
1955.04.21
申请号
FRD1092484
申请日期
1953.10.26
申请人
发明人
PRIEUR HENRI-CHARLES
分类号
E21D21/00
主分类号
E21D21/00
代理机构
代理人
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