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发明名称
Valve
摘要
申请公布号
US2613688(A)
申请公布日期
1952.10.14
申请号
US19460674825
申请日期
1946.06.06
申请人
KNAGGS LEAH L
发明人
KNAGGS LEAH L.
分类号
F16K21/12
主分类号
F16K21/12
代理机构
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