CARBONIZING GRID AND PLATE OF VACUUM TUBES,申请号CAD304003-传众专利搜索

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发明名称	CARBONIZING GRID AND PLATE OF VACUUM TUBES
摘要
申请公布号	CA304003(A)	申请公布日期	1930.09.16
申请号	CAD304003	申请日期
申请人	THE CANADIAN WESTINGHOUSE COMPANY	发明人	CHARLES B. UPP
分类号		主分类号
代理机构		代理人
主权项
地址

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