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发明名称	Whipstock
摘要
申请公布号	US2544982(A)	申请公布日期	1951.03.13
申请号	US19460709711	申请日期	1946.11.14
申请人	EASTMAN OIL WELL SURVEY COMPANY	发明人	BUTTOLPH RALPH
分类号	E21B7/06;E21B7/08	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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