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经营范围
发明名称
DIGITAL LOUDSPEAKING TELEPHONE
摘要
申请公布号
GB8820596(D0)
申请公布日期
1988.09.28
申请号
GB19880020596
申请日期
1988.08.31
申请人
MITEL CORPORATION
发明人
分类号
H04M1/00;H04M1/253;H04M1/60;H04M9/08;H04Q1/453;(IPC1-7):H04M1/60
主分类号
H04M1/00
代理机构
代理人
主权项
地址
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