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发明名称
Double sliding louver board venetian blind, designed to decrease the penetration of light when closed
摘要
申请公布号
GB739633(A)
申请公布日期
1955.11.02
申请号
GB19540004233
申请日期
1954.02.12
申请人
ORESTE BERNI
发明人
分类号
E06B9/307;F24F13/15
主分类号
E06B9/307
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代理人
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