VACUUM TUBE CATHODE,申请号CAD327512-传众专利搜索

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发明名称	VACUUM TUBE CATHODE
摘要
申请公布号	CA327512(A)	申请公布日期	1932.11.08
申请号	CAD327512	申请日期
申请人	THE WAPPLER ELECTRIC COMPANY	发明人	ARTHUR MUTSCHELLER
分类号		主分类号
代理机构		代理人
主权项
地址

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