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发明名称
TELEPHONE SET FOR GENERATING RING CALL TONE
摘要
申请公布号
JPH01319344(A)
申请公布日期
1989.12.25
申请号
JP19880154435
申请日期
1988.06.21
申请人
NEC CORP
发明人
NAGASHIMA MASARU
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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