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经营范围
发明名称
Improvements relating to dampers or air regulators for furnaces and the like
摘要
申请公布号
GB669859(A)
申请公布日期
1952.04.09
申请号
GB19490017139
申请日期
1949.06.29
申请人
NORMAN WIGNALL
发明人
分类号
F23L13/00
主分类号
F23L13/00
代理机构
代理人
主权项
地址
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