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经营范围
发明名称
Safety valve
摘要
申请公布号
US1837970(A)
申请公布日期
1931.12.22
申请号
US19300488968
申请日期
1930.10.15
申请人
JONES WILLIS N
发明人
JONES WILLIS N.
分类号
F16K15/20
主分类号
F16K15/20
代理机构
代理人
主权项
地址
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