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发明名称
Water softener
摘要
申请公布号
US2462154(A)
申请公布日期
1949.02.22
申请号
US19460715150
申请日期
1946.12.10
申请人
BARNES JOHN V
发明人
BARNES JOHN V.
分类号
C02F1/42
主分类号
C02F1/42
代理机构
代理人
主权项
地址
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