Leak detector and vacuum pumping station,申请号US19650511847-传众专利搜索

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发明名称	Leak detector and vacuum pumping station
摘要
申请公布号	US3327521(A)	申请公布日期	1967.06.27
申请号	US19650511847	申请日期	1965.12.06
申请人	NATIONAL RESEARCH CORPORATION	发明人	BRIGGS WALTON E.
分类号	F04F9/04;G01M3/20;G01M3/22	主分类号	F04F9/04
代理机构		代理人
主权项
地址

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