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发明名称
MULTIDUCT SEWER
摘要
申请公布号
PL147554(B1)
申请公布日期
1989.06.30
申请号
PL19860257873
申请日期
1986.02.07
申请人
发明人
分类号
E03F;E03F1/00;E03F5/02;(IPC1-7):E03F1/00
主分类号
E03F
代理机构
代理人
主权项
地址
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