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经营范围
发明名称
FILLING PROP
摘要
申请公布号
PL266494(A1)
申请公布日期
1989.01.05
申请号
PL19870266494
申请日期
1987.06.25
申请人
发明人
分类号
E21D;E21D15/28;(IPC1-7):E21D/
主分类号
E21D
代理机构
代理人
主权项
地址
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