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经营范围
发明名称
Water purification
摘要
申请公布号
US2310009(A)
申请公布日期
1943.02.02
申请号
US19380231052
申请日期
1938.09.21
申请人
PHILADELPHIA QUARTZ COMPANY
发明人
BAKER CHESTER L.;DEDRICK CHARLES H.
分类号
C02F1/52
主分类号
C02F1/52
代理机构
代理人
主权项
地址
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