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发明名称
Furnace valve water seal
摘要
申请公布号
US2993501(A)
申请公布日期
1961.07.25
申请号
US19590815171
申请日期
1959.05.22
申请人
NELISSEN PETER H
发明人
NELISSEN PETER H.
分类号
C21D9/70;F27D99/00
主分类号
C21D9/70
代理机构
代理人
主权项
地址
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