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发明名称
Pressure sealing pipe line pig
摘要
申请公布号
US3403701(A)
申请公布日期
1968.10.01
申请号
US19660604801
申请日期
1966.12.27
申请人
MARY M. KNAPP;HARRY J. GIRARD
发明人
KNAPP MARY M.;GIRARD HARRY J.
分类号
B08B9/04
主分类号
B08B9/04
代理机构
代理人
主权项
地址
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