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发明名称
Streckenausbau fuer den Grubenbetrieb
摘要
申请公布号
DE1174731(B)
申请公布日期
1964.07.30
申请号
DE1959C019437
申请日期
1959.07.22
申请人
GEORGES CHAPRON
发明人
CHAPRON GEORGES
分类号
E21D11/10;E21D11/15;E21D11/20;E21D19/04
主分类号
E21D11/10
代理机构
代理人
主权项
地址
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