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经营范围
发明名称
Improvements in and relating to ceilings
摘要
申请公布号
GB872986(A)
申请公布日期
1961.07.19
申请号
GB19560023817
申请日期
1956.08.02
申请人
HENRY HOPE BRUCE
发明人
分类号
E04B9/20
主分类号
E04B9/20
代理机构
代理人
主权项
地址
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