Improvements in and relating to vacuum tight seals,申请号GB19380000535-传众专利搜索

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发明名称	Improvements in and relating to vacuum tight seals
摘要
申请公布号	GB490586(A)	申请公布日期	1938.08.17
申请号	GB19380000535	申请日期	1938.01.07
申请人	THE BRITISH THOMSON-HOUSTON COMPANY LIMITED	发明人
分类号	H01J9/40	主分类号	H01J9/40
代理机构		代理人
主权项
地址

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