High vacuum valve,申请号US19520305523-传众专利搜索

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发明名称	High vacuum valve
摘要
申请公布号	US2796887(A)	申请公布日期	1957.06.25
申请号	US19520305523	申请日期	1952.08.20
申请人	JOSHUA STERN	发明人	STERN JOSHUA
分类号	F16K3/24	主分类号	F16K3/24
代理机构		代理人
主权项
地址

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