Method and apparatus for broadcasting sound,申请号US19280256008-传众专利搜索

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发明名称	Method and apparatus for broadcasting sound
摘要
申请公布号	US1864961(A)	申请公布日期	1932.06.28
申请号	US19280256008	申请日期	1928.02.21
申请人	TITUS PAUL M	发明人	TITUS PAUL M.
分类号	H04H20/18;H04H20/22	主分类号	H04H20/18
代理机构		代理人
主权项
地址

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