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经营范围
发明名称
Secondary air feeding fire door for boilers, furnaces, and the like
摘要
申请公布号
US2683429(A)
申请公布日期
1954.07.13
申请号
US19490102546
申请日期
1949.07.01
申请人
MAREK STEUERMAN
发明人
STEUERMAN MAREK
分类号
F23M7/00
主分类号
F23M7/00
代理机构
代理人
主权项
地址
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