Sound-box construction,申请号US19310555902-传众专利搜索

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发明名称	Sound-box construction
摘要
申请公布号	US2007128(A)	申请公布日期	1935.07.02
申请号	US19310555902	申请日期	1931.08.08
申请人	DICTAPHONE CORPORATION	发明人	LUCARELLE JOSEPH M.
分类号	H04R7/04	主分类号	H04R7/04
代理机构		代理人
主权项
地址

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