Automatic volume control,申请号US19330702674-传众专利搜索

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发明名称	Automatic volume control
摘要
申请公布号	US2092500(A)	申请公布日期	1937.09.07
申请号	US19330702674	申请日期	1933.12.16
申请人	RADIO CORPORATION	发明人	CHITTICK KENNETH A.
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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