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发明名称
TELEPHONE SET WITH CALLING TONE CHANGING FUNCTION
摘要
申请公布号
JPH02142251(A)
申请公布日期
1990.05.31
申请号
JP19880296688
申请日期
1988.11.22
申请人
NEC CORP
发明人
YOKOYAMA KAHORU;OSAWA SHIGERU
分类号
H04M1/00;H04M1/53
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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