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发明名称
SCHIEBERVENTIL
摘要
申请公布号
AT299095(B)
申请公布日期
1972.05.15
申请号
AT19700004190
申请日期
1970.05.08
申请人
ACF INDUSTRIES INC
发明人
NELSON N
分类号
E21B43/12;(IPC1-7):E21B43/12
主分类号
E21B43/12
代理机构
代理人
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地址
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