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经营范围
发明名称
TUNNEL DRIVE SHIELD
摘要
申请公布号
GB2058886(B)
申请公布日期
1983.01.19
申请号
GB19800029779
申请日期
1980.09.15
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
分类号
E21D9/06;(IPC1-7):E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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