Vacuum pumping system,申请号US19620208973-传众专利搜索

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发明名称	Vacuum pumping system
摘要
申请公布号	US3164320(A)	申请公布日期	1965.01.05
申请号	US19620208973	申请日期	1962.07.10
申请人	WELBOURN JOHN T	发明人	WELBOURN JOHN T.
分类号	H01J41/12	主分类号	H01J41/12
代理机构		代理人
主权项
地址

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