TONE RINGER CIRCUIT FOR TELEPHONE SET,申请号JP19880077105-传众专利搜索

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发明名称	TONE RINGER CIRCUIT FOR TELEPHONE SET
摘要
申请公布号	JPH01248733(A)	申请公布日期	1989.10.04
申请号	JP19880077105	申请日期	1988.03.29
申请人	NEC CORP	发明人	HARA MICHIO
分类号	H04M1/00	主分类号	H04M1/00
代理机构		代理人
主权项
地址

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