Oil well gusher control regulator,申请号US19330695488-传众专利搜索

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发明名称	Oil well gusher control regulator
摘要
申请公布号	US1978378(A)	申请公布日期	1934.10.23
申请号	US19330695488	申请日期	1933.10.27
申请人	WALKER HARDIE L	发明人	WALKER HARDIE L.
分类号	E21B33/06	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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