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发明名称
METHOD OF MAKING PERFORATED DOUBLE-PASSAGE HOSES FOR DRIP WATERING AND APPARATUS THEREFOR
摘要
申请公布号
PL155800(B1)
申请公布日期
1992.01.31
申请号
PL19880270330
申请日期
1988.01.28
申请人
发明人
分类号
A01G25/02;B29D;F16L11/16;(IPC1-7):B29D23/22
主分类号
A01G25/02
代理机构
代理人
主权项
地址
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