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经营范围
发明名称
Improvements in or relating to screens
摘要
申请公布号
GB896873(A)
申请公布日期
1962.05.23
申请号
GB19570031480
申请日期
1957.10.08
申请人
WINIFRED LUCY BULL
发明人
分类号
F24B1/192
主分类号
F24B1/192
代理机构
代理人
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