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经营范围
发明名称
Improvements in and relating to electrical heaters
摘要
申请公布号
GB634763(A)
申请公布日期
1950.03.29
申请号
GB19480002309
申请日期
1948.01.26
申请人
ROBERT FRISHER STILL
发明人
分类号
F24C7/06
主分类号
F24C7/06
代理机构
代理人
主权项
地址
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