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发明名称
Improvements relating to heating devices
摘要
申请公布号
GB9920350(D0)
申请公布日期
1999.11.03
申请号
GB19990020350
申请日期
1999.08.31
申请人
发明人
分类号
F24H9/12
主分类号
F24H9/12
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代理人
主权项
地址
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