High-vacuum device,申请号US19530339609-传众专利搜索

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发明名称	High-vacuum device
摘要
申请公布号	US2709034(A)	申请公布日期	1955.05.24
申请号	US19530339609	申请日期	1953.03.02
申请人	NATIONAL RESEARCH CORPORATION	发明人	LAWRANCE RICHARD B.;YEATON RAYMOND A.
分类号	F04F9/00	主分类号	F04F9/00
代理机构		代理人
主权项
地址

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