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发明名称
Pipe line instrument
摘要
申请公布号
US2782370(A)
申请公布日期
1957.02.19
申请号
US19530372755
申请日期
1953.08.06
申请人
T. D. WILLIAMSON, INC.
发明人
NOOY BURTON VER
分类号
E21B47/10;G01M3/00;G01M3/18;G01N27/20
主分类号
E21B47/10
代理机构
代理人
主权项
地址
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