Thermionic cathode construction,申请号US19440525659-传众专利搜索

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发明名称	Thermionic cathode construction
摘要
申请公布号	US2424293(A)	申请公布日期	1947.07.22
申请号	US19440525659	申请日期	1944.03.09
申请人	WESTINGHOUSE ELECTRIC CORPORATION	发明人	JR. WARD W. WATROUS,
分类号	H01J1/22	主分类号	H01J1/22
代理机构		代理人
主权项
地址

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