Vacuum-tube circuits and the like and method of controlling the same,申请号US19250048766-传众专利搜索

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发明名称	Vacuum-tube circuits and the like and method of controlling the same
摘要
申请公布号	US1773503(A)	申请公布日期	1930.08.19
申请号	US19250048766	申请日期	1925.08.07
申请人	STOEKLE ERWIN R	发明人	STOEKLE ERWIN R.
分类号	H04B1/16	主分类号	H04B1/16
代理机构		代理人
主权项
地址

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