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经营范围
发明名称
Improvements in or relating to ventilation louvers
摘要
申请公布号
GB699984(A)
申请公布日期
1953.11.18
申请号
GB19510019814
申请日期
1951.08.22
申请人
ERNST ERWIN GORTH
发明人
分类号
E06B7/082
主分类号
E06B7/082
代理机构
代理人
主权项
地址
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