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发明名称
Boiler
摘要
申请公布号
US2149438(A)
申请公布日期
1939.03.07
申请号
US19360118389
申请日期
1936.12.30
申请人
HARTMANN OTTO H;HANS TREDE
发明人
HARTMANN OTTO H.;TREDE HANS
分类号
F22B1/12;F22B21/08;F22B31/04
主分类号
F22B1/12
代理机构
代理人
主权项
地址
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