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经营范围
发明名称
Valve locating device
摘要
申请公布号
US2775736(A)
申请公布日期
1956.12.25
申请号
US19540463015
申请日期
1954.10.18
申请人
AQUA SURVEY & INSTRUMENT COMPANY
发明人
PIES OTHMAR W.;MIDDENDORF WILLIAM H.;JR. CARL F. EVERT,
分类号
G01V3/15
主分类号
G01V3/15
代理机构
代理人
主权项
地址
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