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发明名称
PROP
摘要
申请公布号
ZA8205399(B)
申请公布日期
1984.01.25
申请号
ZA19820005399
申请日期
1982.07.27
申请人
MINE SUPPORT SYSTEMS (PTY) LTD
发明人
DYK HERMANUS CHRISTOFFEL VAN
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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