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发明名称
EQUIPMENT FOR COAL'S OR UTILITY MINERAL'S FLOW DIRECTING
摘要
申请公布号
CS265774(B1)
申请公布日期
1989.11.14
申请号
CS19870002442
申请日期
1987.04.06
申请人
WALA TADEAS ING.,CS
发明人
WALA TADEAS ING.,CS
分类号
E21D23/00;(IPC1-7):E21D23/00
主分类号
E21D23/00
代理机构
代理人
主权项
地址
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