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发明名称
Verfahren und Vorrichtung zum Auffahren eines Stollens.
摘要
申请公布号
CH286785(A)
申请公布日期
1952.11.15
申请号
CHD286785
申请日期
1950.03.27
申请人
GEWERKSCHAFT EISENHUETTE WESTFALIA
发明人
WESTFALIA GEWERKSCHAFT EISENHUETTE
分类号
E21D9/12
主分类号
E21D9/12
代理机构
代理人
主权项
地址
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