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经营范围
发明名称
Perfectionnements apportés aux grilles de foyers
摘要
申请公布号
FR717695(A)
申请公布日期
1932.01.12
申请号
FRD717695
申请日期
1931.05.27
申请人
发明人
DAVIDSON THOMAS MALCOLM
分类号
F23H7/06
主分类号
F23H7/06
代理机构
代理人
主权项
地址
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