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发明名称
SECURITY VIEWING DEVICE
摘要
申请公布号
GB2221945(B)
申请公布日期
1992.01.08
申请号
GB19890011434
申请日期
1989.05.18
申请人
JOHN * URQUHART
发明人
JOHN * URQUHART
分类号
E06B7/30
主分类号
E06B7/30
代理机构
代理人
主权项
地址
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