Casing hook for oil wells,申请号US19280281148-传众专利搜索

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发明名称	Casing hook for oil wells
摘要
申请公布号	US1815290(A)	申请公布日期	1931.07.21
申请号	US19280281148	申请日期	1928.05.28
申请人	BRYANT DEDMAN	发明人	DEDMAN BRYANT
分类号	E21B19/04	主分类号	E21B19/04
代理机构		代理人
主权项
地址

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