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发明名称
PSEUDO CALL GENERATOR FOR TELEPHONE EXCHANGE TEST
摘要
申请公布号
JPH0252553(A)
申请公布日期
1990.02.22
申请号
JP19880203648
申请日期
1988.08.16
申请人
NEC CORP
发明人
HARA MASAHIKO
分类号
H04M3/26
主分类号
H04M3/26
代理机构
代理人
主权项
地址
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