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经营范围
发明名称
Apertured pipe segment.
摘要
申请公布号
AP116(A)
申请公布日期
1991.02.13
申请号
AP19890000128
申请日期
1989.05.31
申请人
KOTHMANN ANTONIUS BERNHARD
发明人
KOTHMANN, ANTONIUS BERNHARD
分类号
E03B3/18;E21B43/08;(IPC1-7):E02B11/00
主分类号
E03B3/18
代理机构
代理人
主权项
地址
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