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发明名称
Improvements in and relating to electrically heated double tunnel furnaces
摘要
申请公布号
GB508738(A)
申请公布日期
1939.07.05
申请号
GB19380013747
申请日期
1938.05.09
申请人
WILLIAM WARREN TRIGGS
发明人
分类号
F27D11/02;H05B3/64
主分类号
F27D11/02
代理机构
代理人
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