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发明名称
Water softener
摘要
申请公布号
US2088104(A)
申请公布日期
1937.07.27
申请号
US19310527875
申请日期
1931.04.06
申请人
THE DURO COMPANY
发明人
ZIMMERMAN ARTHUR C.
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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