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发明名称
TELEFONNETZ-DIENST ZUR UMWANDLUNG VON SPRACHE IN WAHLTÖNE
摘要
申请公布号
DE69625793(D1)
申请公布日期
2003.02.20
申请号
DE19966025793
申请日期
1996.09.24
申请人
AT & T CORP., NEW YORK
发明人
BULFER, FREDERICK
分类号
G10L15/00;H04M1/27;H04M3/42;H04M3/493;H04M3/533;H04Q1/45;(IPC1-7):H04M1/27
主分类号
G10L15/00
代理机构
代理人
主权项
地址
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