Telephone instrument utilizing transistor amplifier,申请号US19540460574-传众专利搜索

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发明名称	Telephone instrument utilizing transistor amplifier
摘要
申请公布号	US2885483(A)	申请公布日期	1959.05.05
申请号	US19540460574	申请日期	1954.10.06
申请人	GENERAL TELEPHONE LABORATORIES, INCORPORATED	发明人	FAULKNER ALFRED H.
分类号	H04M1/60	主分类号	H04M1/60
代理机构		代理人
主权项
地址

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