Sound collecting and transmitting means,申请号US19260150578-传众专利搜索

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发明名称	Sound collecting and transmitting means
摘要
申请公布号	US1804485(A)	申请公布日期	1931.05.12
申请号	US19260150578	申请日期	1926.11.24
申请人	DICTAPHONE CORPORATION	发明人	WOODBRIDGE CHARLES K.
分类号	G10K13/00	主分类号	G10K13/00
代理机构		代理人
主权项
地址

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