Electrostatic sound reproducer,申请号US19280291885-传众专利搜索

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发明名称	Electrostatic sound reproducer
摘要
申请公布号	US1789554(A)	申请公布日期	1931.01.20
申请号	US19280291885	申请日期	1928.07.11
申请人	UNITED REPRODUCERS PATENTS CORPORATION	发明人	KYLE COLIN
分类号	H04R19/00	主分类号	H04R19/00
代理机构		代理人
主权项
地址

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