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发明名称
Valving system for water softeners
摘要
申请公布号
US3216450(A)
申请公布日期
1965.11.09
申请号
US19620236531
申请日期
1962.11.09
申请人
TIMMONS JOHN W
发明人
TIMMONS JOHN W.
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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