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发明名称
Vortriebsschild
摘要
申请公布号
DE1534596(B1)
申请公布日期
1969.09.18
申请号
DE19651534596
申请日期
1965.09.10
申请人
BERGER DR ING HERMANN
发明人
HERMANN BERGER DR-ING
分类号
E21D11/38;E21D19/00
主分类号
E21D11/38
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