Well apparatus,申请号US19500162083-传众专利搜索

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法人/股东/高管

发明名称	Well apparatus
摘要
申请公布号	US2675874(A)	申请公布日期	1954.04.20
申请号	US19500162083	申请日期	1950.05.15
申请人	LAMONT SPRINGER ALBERT	发明人	SPRINGER ALBERT LAMONT
分类号	E21B34/14	主分类号	E21B34/14
代理机构		代理人
主权项
地址

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