BUSY TONE CIRCUIT FOR AN AUTOMATIC TELEPHONE SYSTEM,申请号CAD546983-传众专利搜索

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发明名称	BUSY TONE CIRCUIT FOR AN AUTOMATIC TELEPHONE SYSTEM
摘要
申请公布号	CA546983(A)	申请公布日期	1957.10.01
申请号	CAD546983	申请日期
申请人	N.V. PHILIPS GLOEILAMPENFABRIEKEN	发明人	WILLEM SIX;JACOBUS DOMBURG
分类号		主分类号
代理机构		代理人
主权项
地址

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