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发明名称
Schreitender Strebausbau
摘要
申请公布号
DE1143470(B)
申请公布日期
1963.02.14
申请号
DE1958K035732
申请日期
1958.09.12
申请人
KRONPRINZ AKTIENGESELLSCHAFT
发明人
DAVIDS HERMANN
分类号
E21D23/00;E21D23/04
主分类号
E21D23/00
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代理人
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