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发明名称
DEVICE AND METHOD FOR CALL-BACK CONFERENCE TELECOMMUNICATIONS
摘要
申请公布号
IL99686(D0)
申请公布日期
1992.08.18
申请号
IL19910099686
申请日期
1991.10.09
申请人
ENCO SYSTEMS LTD.
发明人
分类号
H04M;(IPC1-7):H04M/
主分类号
H04M
代理机构
代理人
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地址
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