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发明名称
Check valves
摘要
申请公布号
US2755816(A)
申请公布日期
1956.07.24
申请号
US19490092033
申请日期
1949.05.07
申请人
COLLINS VALVE COMPANY, INC.
发明人
COLLINS JAMES M.
分类号
F16K15/06
主分类号
F16K15/06
代理机构
代理人
主权项
地址
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