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发明名称
Water heater
摘要
申请公布号
US2257841(A)
申请公布日期
1941.10.07
申请号
US19400328357
申请日期
1940.04.06
申请人
ELAM BERNARD L
发明人
ELAM BERNARD L.
分类号
F24H1/10
主分类号
F24H1/10
代理机构
代理人
主权项
地址
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