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发明名称
Contact decolorization
摘要
申请公布号
US2294779(A)
申请公布日期
1942.09.01
申请号
US19390305676
申请日期
1939.11.22
申请人
VELSICOL CORPORATION
发明人
HYMAN JULIUS
分类号
C10G25/03;C10G25/05;C11B3/10
主分类号
C10G25/03
代理机构
代理人
主权项
地址
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