System for recording work done during rotary drilling operations,申请号US19630285396-传众专利搜索

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发明名称	System for recording work done during rotary drilling operations
摘要
申请公布号	US3298226(A)	申请公布日期	1967.01.17
申请号	US19630285396	申请日期	1963.06.04
申请人	ESSO PRODUCTION RESEARCH COMPANY	发明人	HILDEBRANDT ALEXANDER B.
分类号	E21B19/00;E21B45/00	主分类号	E21B19/00
代理机构		代理人
主权项
地址

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