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经营范围
发明名称
HAND GRID FOR CLEANING GUTTERS FROM SCREENINGS
摘要
申请公布号
PL130525(B1)
申请公布日期
1984.08.31
申请号
PL19810233346
申请日期
1981.10.06
申请人
发明人
分类号
C02F;C02F1/00;(IPC1-7):C02F1/00
主分类号
C02F
代理机构
代理人
主权项
地址
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