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发明名称
Water heater
摘要
申请公布号
US1837597(A)
申请公布日期
1931.12.22
申请号
US19300446297
申请日期
1930.04.22
申请人
THOMAS ROBERT B
发明人
THOMAS ROBERT B.
分类号
F24H1/12;F24H1/18
主分类号
F24H1/12
代理机构
代理人
主权项
地址
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