Improvements in and relating to electron discharge tubes,申请号GB19320013160-传众专利搜索

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发明名称	Improvements in and relating to electron discharge tubes
摘要
申请公布号	GB400999(A)	申请公布日期	1933.11.06
申请号	GB19320013160	申请日期	1932.05.06
申请人	STANDARD TELEPHONES AND CABLES, LIMITED;WILFRID EARNSHAW BENHAM;FRANK DOUGLAS GOODCHILD	发明人
分类号	H01J19/42	主分类号	H01J19/42
代理机构		代理人
主权项
地址

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