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发明名称
Water heater
摘要
申请公布号
US1791983(A)
申请公布日期
1931.02.10
申请号
US19290345086
申请日期
1929.03.07
申请人
THAYER WILLIAM B
发明人
THAYER WILLIAM B.
分类号
F24H1/16
主分类号
F24H1/16
代理机构
代理人
主权项
地址
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