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发明名称
摘要
申请公布号
PL294208(A1)
申请公布日期
1993.02.08
申请号
PL19910294208
申请日期
1991.03.12
申请人
NLW FOERDERTECHNIK GMBH
发明人
SCHAEFERTOENS JOERN HENRICH
分类号
E21D15/44;(IPC1-7):E21D15/51
主分类号
E21D15/44
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