TRANSMITTING SOUND VOLUME OPTIMIZING CIRCUIT FOR SPEAKING DEVICE,申请号JP19900410904-传众专利搜索

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发明名称	TRANSMITTING SOUND VOLUME OPTIMIZING CIRCUIT FOR SPEAKING DEVICE
摘要
申请公布号	JPH04216216(A)	申请公布日期	1992.08.06
申请号	JP19900410904	申请日期	1990.12.15
申请人	FUJITSU LTD	发明人	KOBAYASHI MASUO
分类号	H04B1/40	主分类号	H04B1/40
代理机构		代理人
主权项
地址

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