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经营范围
发明名称
Process of water purification
摘要
申请公布号
US2029960(A)
申请公布日期
1936.02.04
申请号
US19340737474
申请日期
1934.07.28
申请人
CHARLES H. LEWIS
发明人
URBAIN OLIVER M.
分类号
C02F9/00
主分类号
C02F9/00
代理机构
代理人
主权项
地址
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