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发明名称
GUTTERING
摘要
申请公布号
GB1603818(A)
申请公布日期
1981.12.02
申请号
GB19770043568
申请日期
1978.05.31
申请人
WAVIN BV
发明人
分类号
E04D13/068;(IPC1-7):E04D13/06
主分类号
E04D13/068
代理机构
代理人
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