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发明名称
Nachgiebige Laschenverbindung fuer eisernen, aus Profileisen bestehenden Grubenausbau
摘要
申请公布号
DE538280(C)
申请公布日期
1931.11.12
申请号
DED538280D
申请日期
申请人
HEINR. KORFMANN JR. MASCHINENFABRIK
发明人
分类号
E21D11/18
主分类号
E21D11/18
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