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发明名称
ELECTRICAL HEATING OF HOT WATER BOILER
摘要
申请公布号
CA803024(A)
申请公布日期
1968.12.31
申请号
CAD803024
申请日期
申请人
THE SINGER COMPANY
发明人
HANFORD L. ECKMAN
分类号
主分类号
代理机构
代理人
主权项
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