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经营范围
发明名称
Mine prop pre-loading device.
摘要
申请公布号
ZA200110411(B)
申请公布日期
2002.08.01
申请号
ZA20010010411
申请日期
2001.12.19
申请人
DIRECTECH MANUFACTURING (PROPRIETARY) LIMITED
发明人
JACOBUS JOHANNES VISSER
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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