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发明名称
METHOD OF EXCAVATING AND CONTROLLING SUPPORTING HOLDING SHIELD AND ITS DEVICE
摘要
申请公布号
JPS52126039(A)
申请公布日期
1977.10.22
申请号
JP19770031491
申请日期
1977.03.22
申请人
GEWERK EISENHUETTE WESTFALIA
发明人
HERUBERUTO HAITOKANPU;RORUFU SHIYUTORUTSU
分类号
E21D9/06
主分类号
E21D9/06
代理机构
代理人
主权项
地址
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