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发明名称
Improvements relating to window blind rollers
摘要
申请公布号
GB542102(A)
申请公布日期
1941.12.24
申请号
GB19400015072
申请日期
1940.10.09
申请人
WILLIAM JAMES DAVIES
发明人
分类号
E04F10/06
主分类号
E04F10/06
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