Automatic protection of amplifier tubes,申请号US19310568838-传众专利搜索

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发明名称	Automatic protection of amplifier tubes
摘要
申请公布号	US1969341(A)	申请公布日期	1934.08.07
申请号	US19310568838	申请日期	1931.10.14
申请人	WALLACC JAMES D	发明人	WALLACC JAMES D.
分类号	H03F1/54	主分类号	H03F1/54
代理机构		代理人
主权项
地址

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