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发明名称
COMMUNICATION/WARNING SYSTEM
摘要
申请公布号
GB8531939(D0)
申请公布日期
1986.02.05
申请号
GB19850031939
申请日期
1985.12.31
申请人
PARKER, T K
发明人
分类号
G09B21/00;G09B21/04
主分类号
G09B21/00
代理机构
代理人
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