Multi-purpose derrick barge and method of use in oil well drilling and servicing,申请号US19540432543-传众专利搜索

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发明名称	Multi-purpose derrick barge and method of use in oil well drilling and servicing
摘要
申请公布号	US3001595(A)	申请公布日期	1961.09.26
申请号	US19540432543	申请日期	1954.05.26
申请人	DE LONG CORPORATION	发明人	LUCAS JOSEPH E.
分类号	E21B15/02	主分类号	E21B15/02
代理机构		代理人
主权项
地址

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