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经营范围
发明名称
Steam producing unit
摘要
申请公布号
US1872138(A)
申请公布日期
1932.08.16
申请号
US19270235792
申请日期
1927.11.26
申请人
METROPOLITAN ENGINEERING COMPANY
发明人
GRADY CHARLES B.
分类号
F22B31/04;F22B33/14
主分类号
F22B31/04
代理机构
代理人
主权项
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