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发明名称
Improvements relating to safety door systems
摘要
申请公布号
GB925476(A)
申请公布日期
1963.05.08
申请号
GB19610002227
申请日期
1961.01.19
申请人
ARTHUR VERNON SIMMONDS
发明人
分类号
E05G5/02
主分类号
E05G5/02
代理机构
代理人
主权项
地址
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