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经营范围
发明名称
Gas heater
摘要
申请公布号
US2670425(A)
申请公布日期
1954.02.23
申请号
US19520285578
申请日期
1952.05.01
申请人
NORTON COMPANY
发明人
STONE H. NATHAN
分类号
F24H3/04
主分类号
F24H3/04
代理机构
代理人
主权项
地址
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