ELEMENTO A MANDRINO CON SEDE SATERALE PER POZZI PETROLIFERI E RELATIVO PROCEDIMENTO DI FABBRICAZIONE,申请号IT19800049308-传众专利搜索

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发明名称	ELEMENTO A MANDRINO CON SEDE SATERALE PER POZZI PETROLIFERI E RELATIVO PROCEDIMENTO DI FABBRICAZIONE
摘要
申请公布号	IT1128535(B)	申请公布日期	1986.05.28
申请号	IT19800049308	申请日期	1980.07.23
申请人	PERRY BASS INC;RICHARDSON FOUNDATION	发明人	MOORE HOWARD HOLLAND JR
分类号	E21B23/03;(IPC1-7):E21B/	主分类号	E21B23/03
代理机构		代理人
主权项
地址

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