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经营范围
发明名称
Improvements in or relating to double windows having coupled sashes
摘要
申请公布号
GB484963(A)
申请公布日期
1938.05.12
申请号
GB19370025707
申请日期
1937.09.22
申请人
ERIC SIGFRIED PERSSON
发明人
分类号
E06B3/26;E06B3/34;E06B3/40
主分类号
E06B3/26
代理机构
代理人
主权项
地址
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