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经营范围
发明名称
Improved valve
摘要
申请公布号
GB682026(A)
申请公布日期
1952.11.05
申请号
GB19500019018
申请日期
1950.07.31
申请人
ROBERT NELSON WINFREE
发明人
分类号
F16K1/48
主分类号
F16K1/48
代理机构
代理人
主权项
地址
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