使用主动元件之电话机电路,申请号TW017973-传众专利搜索

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发明名称	使用主动元件之电话机电路
摘要
申请公布号	TW010034	申请公布日期	1971.12.01
申请号	TW017973	申请日期	1971.02.02
申请人	日本电信电话公社	发明人	北条康男;寺井正明;松田亮一
分类号	H04M	主分类号	H04M
代理机构		代理人	林敏生台北巿南京东路二段一二五号七楼伟成第一大楼
主权项
地址

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