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经营范围
发明名称
Locomotive superheater
摘要
申请公布号
US2148025(A)
申请公布日期
1939.02.21
申请号
US19370121611
申请日期
1937.01.21
申请人
KARL KOEHLER
发明人
KOEHLER KARL
分类号
F22G7/06
主分类号
F22G7/06
代理机构
代理人
主权项
地址
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