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发明名称
Control valve means for swimming pool filter and backwash operations
摘要
申请公布号
US3195726(A)
申请公布日期
1965.07.20
申请号
US19620203048
申请日期
1962.06.18
申请人
SAURENMAN CO., INC.
发明人
SAURENMAN PHILLIP E.;SAURENMAN PAUL J.
分类号
E04H4/12
主分类号
E04H4/12
代理机构
代理人
主权项
地址
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