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发明名称
Heat exchanger
摘要
申请公布号
US1799626(A)
申请公布日期
1931.04.07
申请号
US19290376740
申请日期
1929.07.08
申请人
REFINERY ENGINEERS, INC.
发明人
JR. PERCY C. KEITH,
分类号
F28F7/02
主分类号
F28F7/02
代理机构
代理人
主权项
地址
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