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经营范围
发明名称
AANGEDREVEN PIJPDRAAITANG.
摘要
申请公布号
NL7506941(A)
申请公布日期
1976.02.03
申请号
NL19750006941
申请日期
1975.06.11
申请人
BYRON JACKSON, INC. TE LONG BEACH, CALIFORNIE, VER.ST.V.AM.
发明人
分类号
E21B19/14;B25B13/50;B25B21/00;E21B19/16;(IPC1-7):E21B19/16
主分类号
E21B19/14
代理机构
代理人
主权项
地址
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