Side hole coring device,申请号US19420441634-传众专利搜索

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发明名称	Side hole coring device
摘要
申请公布号	US2354399(A)	申请公布日期	1944.07.25
申请号	US19420441634	申请日期	1942.05.04
申请人	REED ROLLER BIT COMPANY	发明人	NOBLE WILEY B.
分类号	E21B49/06	主分类号	E21B49/06
代理机构		代理人
主权项
地址

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