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发明名称
Improved reversible sliding sash window
摘要
申请公布号
GB494121(A)
申请公布日期
1938.10.20
申请号
GB19370016175
申请日期
1937.06.11
申请人
JOHN WEYREUTER
发明人
分类号
E06B3/50
主分类号
E06B3/50
代理机构
代理人
主权项
地址
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