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发明名称
Verbolzung fuer den Streckenausbau
摘要
申请公布号
DE1172210(B)
申请公布日期
1964.06.18
申请号
DE1957P019441
申请日期
1957.10.09
申请人
PETER PETERS
发明人
PETERS PETER
分类号
E21D11/28
主分类号
E21D11/28
代理机构
代理人
主权项
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