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发明名称
Go-devil device for locating obstructions in pipe lines
摘要
申请公布号
US2428326(A)
申请公布日期
1947.09.30
申请号
US19430512064
申请日期
1943.11.27
申请人
SHELL DEVELOPMENT COMPANY
发明人
FAY CHARLES H.
分类号
B08B9/055;G01V15/00
主分类号
B08B9/055
代理机构
代理人
主权项
地址
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