Method of making joints,申请号US19380247756-传众专利搜索

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发明名称	Method of making joints
摘要
申请公布号	US2187798(A)	申请公布日期	1940.01.23
申请号	US19380247756	申请日期	1938.12.27
申请人	THE NATIONAL SUPPLY COMPANY	发明人	TEXTER HOWARD G.
分类号	E21B17/042;F16L13/02	主分类号	E21B17/042
代理机构		代理人
主权项
地址

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