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发明名称
Improvements in and relating to exit doors for cinemas, theatres, public halls and the like
摘要
申请公布号
GB342534(A)
申请公布日期
1931.02.05
申请号
GB19300004046
申请日期
1930.02.06
申请人
ROBERT ROBSON
发明人
分类号
E05B65/10
主分类号
E05B65/10
代理机构
代理人
主权项
地址
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