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经营范围
发明名称
Telecommunication exchange with transferring data during the call
摘要
申请公布号
EP0872992(A3)
申请公布日期
2003.07.02
申请号
EP19980105203
申请日期
1998.03.23
申请人
DEUTSCHE TELEKOM AG
发明人
HOLDERRIED, HARRY, ING. (GRAD.);DIHLMANN, KLAUS, DIPL.-ING.
分类号
H04M1/57;H04M3/42;H04M3/537;(IPC1-7):H04M1/57
主分类号
H04M1/57
代理机构
代理人
主权项
地址
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