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发明名称
STOPE PROP
摘要
申请公布号
ZA7702416(B)
申请公布日期
1978.06.28
申请号
ZA19770002416
申请日期
1977.04.21
申请人
TONDER P
发明人
TONDER P
分类号
E21D15/14;E21D15/38;E21D15/50
主分类号
E21D15/14
代理机构
代理人
主权项
地址
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