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发明名称
ANCHORING DEVICE
摘要
申请公布号
ZA8807025(B)
申请公布日期
1990.03.28
申请号
ZA19880007025
申请日期
1988.09.20
申请人
GLOBAL GROUND CONTROL (PROPRIETARY) LIMITED
发明人
JACOBUS JOHANNES DUVENHAGE
分类号
E21D;F16B
主分类号
E21D
代理机构
代理人
主权项
地址
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