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发明名称
Pre-heater or furnace assembly
摘要
申请公布号
US2999675(A)
申请公布日期
1961.09.12
申请号
US19530391858
申请日期
1953.11.13
申请人
SELAS CORPORATION OF AMERICA
发明人
JR. JOHN E. ERHARDT,;SIEGEL ELHARDT M.
分类号
C21D9/56
主分类号
C21D9/56
代理机构
代理人
主权项
地址
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