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经营范围
发明名称
Yieldable prop
摘要
申请公布号
ZA9309125(B)
申请公布日期
1994.08.05
申请号
ZA19930009125
申请日期
1993.12.06
申请人
M. PROPS (PROPRIETARY) LIMITED.
发明人
EDWARD GEORGE GROVES
分类号
E21D
主分类号
E21D
代理机构
代理人
主权项
地址
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