Core barrel head assembly with axial groove,申请号US201129383340F-传众专利搜索

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发明名称	Core barrel head assembly with axial groove
摘要
申请公布号	USD644668(S1)	申请公布日期	2011.09.06
申请号	US201129383340F	申请日期	2011.01.14
申请人	LONGYEAR TM, INC.	发明人	DRENTH CHRISTOPHER L.
分类号		主分类号
代理机构		代理人
主权项
地址

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