Casing plugging apparatus,申请号US19320622904-传众专利搜索

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发明名称	Casing plugging apparatus
摘要
申请公布号	US1913548(A)	申请公布日期	1933.06.13
申请号	US19320622904	申请日期	1932.07.16
申请人	OILFIELD SALVAGE COMPANY	发明人	HODGES LESTER E.
分类号	E21B33/134	主分类号	E21B33/134
代理机构		代理人
主权项
地址

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