Apparatus for calipering well bores,申请号US19480021633-传众专利搜索

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发明名称	Apparatus for calipering well bores
摘要
申请公布号	US2656613(A)	申请公布日期	1953.10.27
申请号	US19480021633	申请日期	1948.04.17
申请人	EASTMAN OIL WELL SURVEY COMPANY	发明人	GOBLE RALPH W.
分类号	E21B47/08	主分类号	E21B47/08
代理机构		代理人
主权项
地址

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