Sound operated circuit controller,申请号US19260086077-传众专利搜索

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发明名称	Sound operated circuit controller
摘要
申请公布号	US1844117(A)	申请公布日期	1932.02.09
申请号	US19260086077	申请日期	1926.02.04
申请人	DU MONT ALLEN B	发明人	MONT ALLEN B. DU
分类号		主分类号
代理机构		代理人
主权项
地址

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