Improvements in electric discharge tubes embodying electron mirrors,申请号GB19490009769-传众专利搜索

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发明名称	Improvements in electric discharge tubes embodying electron mirrors
摘要
申请公布号	GB692697(A)	申请公布日期	1953.06.10
申请号	GB19490009769	申请日期	1949.04.11
申请人	PHILIPS ELECTRICAL LIMITED	发明人
分类号	H01J29/60	主分类号	H01J29/60
代理机构		代理人
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地址

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