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经营范围
发明名称
Drainage channel
摘要
申请公布号
CH621593(A5)
申请公布日期
1981.02.13
申请号
CH19770012517
申请日期
1977.10.13
申请人
POLYBAU-ELEMENTE AG
发明人
HANS KUNZ;HANS-PETER CITRINI
分类号
E01C11/22;E03F5/06;(IPC1-7):E01C11/22;E01C9/10
主分类号
E01C11/22
代理机构
代理人
主权项
地址
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