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经营范围
发明名称
Air heater
摘要
申请公布号
US2693941(A)
申请公布日期
1954.11.09
申请号
US19510220669
申请日期
1951.04.12
申请人
BYSTROM SIGFRED O
发明人
BYSTROM SIGFRED O.
分类号
F24B7/00
主分类号
F24B7/00
代理机构
代理人
主权项
地址
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