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发明名称
Schleppkeil fuer Stahlgrubenstempel
摘要
申请公布号
DE827484(C)
申请公布日期
1952.01.10
申请号
DE1948P018880D
申请日期
1948.10.20
申请人
GEORG BACHMANN
发明人
BACHMANN GEORG
分类号
E21D15/28
主分类号
E21D15/28
代理机构
代理人
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