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发明名称
SCHACHTABDECKUNG
摘要
申请公布号
AT372131(B)
申请公布日期
1983.09.12
申请号
AT19780000858
申请日期
1978.02.07
申请人
RAATJES EGBERTUS SIJBOLT
发明人
分类号
E02D29/12;E02D29/14;(IPC1-7):E02D29/14
主分类号
E02D29/12
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