Способ включения ламп с подогревным катодом,申请号SU19400002198-传众专利搜索

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发明名称	Способ включения ламп с подогревным катодом
摘要
申请公布号	SU58618(A1)	申请公布日期	1940.11.30
申请号	SU19400002198	申请日期	1940.05.10
申请人	GUREVICH M.S.	发明人	GUREVICH M.S.
分类号	H03F3/02	主分类号	H03F3/02
代理机构		代理人
主权项
地址

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