Perfectionnements aux tubes électroniques,申请号FRD1028982-传众专利搜索

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发明名称	Perfectionnements aux tubes électroniques
摘要
申请公布号	FR1028982(A)	申请公布日期	1953.05.29
申请号	FRD1028982	申请日期	1950.11.21
申请人	SOCIETE DES ETABLISSEMENTS INDUSTRIELS DE E. C. GRAMMONT ET DE ALEXANDRE GRAMMONT	发明人	TRIPPIER ANDRE-PAUL
分类号	H01J3/02	主分类号	H01J3/02
代理机构		代理人
主权项
地址

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