Release assembly for tubing caliper,申请号US19590796812-传众专利搜索

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发明名称	Release assembly for tubing caliper
摘要
申请公布号	US2999320(A)	申请公布日期	1961.09.12
申请号	US19590796812	申请日期	1959.03.03
申请人	OTIS ENGINEERING CORPORATION	发明人	FREDD JOHN V.
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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