OIL WELL OPERATING APPARATUS,申请号CAD395177-传众专利搜索

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发明名称	OIL WELL OPERATING APPARATUS
摘要
申请公布号	CA395177(A)	申请公布日期	1941.03.11
申请号	CAD395177	申请日期
申请人	SECURITY ENGINEERING CO.	发明人	RICHARD IRWIN BROWN
分类号		主分类号
代理机构		代理人
主权项
地址

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