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发明名称
Grubenstempel mit Doppelkammerprofil
摘要
申请公布号
DE830634(C)
申请公布日期
1952.02.07
申请号
DED830634
申请日期
1949.05.11
申请人
DR.-ING. ALEXANDER SCHMIDT
发明人
SCHMIDT DR.-ING. ALEXANDER;JACOBI DR.-ING. OSKAR
分类号
E21D15/38
主分类号
E21D15/38
代理机构
代理人
主权项
地址
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