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发明名称
Belageisenartiges Profilpaar, insbesondere fuer den ring- oder bogenfoermigen Streckenausbau
摘要
申请公布号
DE919281(C)
申请公布日期
1954.10.18
申请号
DE1949P041762
申请日期
1949.05.06
申请人
BOCHUMER EISENHUETTE HEINTZMANN & CO.
发明人
分类号
E21D11/22
主分类号
E21D11/22
代理机构
代理人
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地址
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