Automatic control for audion amplifiers,申请号US19270231273-传众专利搜索

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发明名称	Automatic control for audion amplifiers
摘要
申请公布号	US1869331(A)	申请公布日期	1932.07.26
申请号	US19270231273	申请日期	1927.11.05
申请人	BOONTON RESEARCH CORPORATION	发明人	BALLANTINE STUART
分类号	H03G3/22	主分类号	H03G3/22
代理机构		代理人
主权项
地址

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