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经营范围
发明名称
Purification treatment
摘要
申请公布号
US2529295(A)
申请公布日期
1950.11.07
申请号
US19490069379
申请日期
1949.01.05
申请人
HOOD JOHN W
发明人
HOOD JOHN W.
分类号
C02F3/04
主分类号
C02F3/04
代理机构
代理人
主权项
地址
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