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发明名称
Device for changing stop valves
摘要
申请公布号
US2867243(A)
申请公布日期
1959.01.06
申请号
US19550527261
申请日期
1955.08.09
申请人
MUELLER CO.
发明人
BOWAN WALTER J.
分类号
F16K7/20
主分类号
F16K7/20
代理机构
代理人
主权项
地址
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