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发明名称
CHECK VALVE
摘要
申请公布号
US3664775(A)
申请公布日期
1972.05.23
申请号
USD3664775
申请日期
1970.01.05
申请人
ENVIRONMENT/ONE CORP.
发明人
CARL E. STIGBERG
分类号
F04B53/10;F16K15/14;(IPC1-7):F04B21/02;F16K15/00
主分类号
F04B53/10
代理机构
代理人
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