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发明名称
COBERTURA DE CANAL
摘要
申请公布号
BR9006850(A)
申请公布日期
1991.08.06
申请号
BR19900006850
申请日期
1990.06.18
申请人
VON ROLL AG.
发明人
HANSRUEDI SPIESS;FRANCOIS GALVANETTO
分类号
E02D29/14;E03F5/06;(IPC1-7):E02D29/14
主分类号
E02D29/14
代理机构
代理人
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地址
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