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发明名称
Annular core heater
摘要
申请公布号
US2260594(A)
申请公布日期
1941.10.28
申请号
US19380187823
申请日期
1938.01.31
申请人
YOUNG FRED M
发明人
YOUNG FRED M.
分类号
F28D1/02
主分类号
F28D1/02
代理机构
代理人
主权项
地址
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