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发明名称
Valve control
摘要
申请公布号
US2102076(A)
申请公布日期
1937.12.14
申请号
US19350024177
申请日期
1935.05.31
申请人
JOHNSON ROY W
发明人
JOHNSON ROY W.
分类号
F16K31/40
主分类号
F16K31/40
代理机构
代理人
主权项
地址
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