Concentric pipe insulator and spacer,申请号US19520287998-传众专利搜索

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发明名称	Concentric pipe insulator and spacer
摘要
申请公布号	US2750963(A)	申请公布日期	1956.06.19
申请号	US19520287998	申请日期	1952.05.15
申请人	THE TEXAS PIPE LINE COMPANY	发明人	BOND DONALD H.
分类号	F16L7/00;F16L59/12	主分类号	F16L7/00
代理机构		代理人
主权项
地址

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