Verstärkungsvorrichtung zur Verwendung mit einem Mikrotelephon eines Telephonapparates.,申请号CHD288283-传众专利搜索

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发明名称	Verstärkungsvorrichtung zur Verwendung mit einem Mikrotelephon eines Telephonapparates.
摘要
申请公布号	CH288283(A)	申请公布日期	1953.01.15
申请号	CHD288283	申请日期	1950.11.22
申请人	BRANSON,JOHN CHARLES SYDNEY;BRANSON,LESLIE CLIFFORD	发明人	SYDNEY BRANSON,JOHN CHARLES;CLIFFORD BRANSON,LESLIE
分类号	H04M1/215;H04M1/60;H04M1/62	主分类号	H04M1/215
代理机构		代理人
主权项
地址

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