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经营范围
发明名称
EMERGENCY CALL SYSTEM
摘要
申请公布号
GB8713462(D0)
申请公布日期
1987.07.15
申请号
GB19870013462
申请日期
1987.06.09
申请人
TUNSTALL TELECOM LTD
发明人
分类号
G08B25/01;H04M11/04
主分类号
G08B25/01
代理机构
代理人
主权项
地址
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