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发明名称
Production of low temperatures
摘要
申请公布号
US2342991(A)
申请公布日期
1944.02.29
申请号
US19410376549
申请日期
1941.01.29
申请人
WIKOFF HELEN L
发明人
WIKOFF HELEN L.
分类号
C09K5/06
主分类号
C09K5/06
代理机构
代理人
主权项
地址
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