SPECTRUM INVERSION PRIVACY TELEPHONE SYSTEM,申请号JP19880244206-传众专利搜索

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发明名称	SPECTRUM INVERSION PRIVACY TELEPHONE SYSTEM
摘要
申请公布号	JPH0294721(A)	申请公布日期	1990.04.05
申请号	JP19880244206	申请日期	1988.09.30
申请人	NEC CORP	发明人	SHIGEMOTO NAOHITO
分类号	H04K1/04	主分类号	H04K1/04
代理机构		代理人
主权项
地址

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