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经营范围
发明名称
Purifying water
摘要
申请公布号
US1757526(A)
申请公布日期
1930.05.06
申请号
US19280270793
申请日期
1928.04.17
申请人
WILLIAM C. OLSEN
发明人
HEDGEPETH LEVI L.
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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