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经营范围
发明名称
Improvements in cover joints for valves
摘要
申请公布号
GB753408(A)
申请公布日期
1956.07.25
申请号
GB19540019455
申请日期
1954.07.02
申请人
DEWRANCE & CO., LIMITED
发明人
分类号
F16K27/08
主分类号
F16K27/08
代理机构
代理人
主权项
地址
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