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发明名称
Valve control mechanism
摘要
申请公布号
US2254795(A)
申请公布日期
1941.09.02
申请号
US19370159736
申请日期
1937.08.18
申请人
AUTOMATIC PUMP & SOFTENER CORPORATION
发明人
DANIELS LEE G.
分类号
C02F1/42;F16K31/48
主分类号
C02F1/42
代理机构
代理人
主权项
地址
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