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经营范围
发明名称
Improvements in or relating to conically seating valves
摘要
申请公布号
GB718078(A)
申请公布日期
1954.11.10
申请号
GB19520015898
申请日期
1952.06.24
申请人
OTTO ALFRED VALDEMAR RUHNSKOLD
发明人
分类号
F16K1/38
主分类号
F16K1/38
代理机构
代理人
主权项
地址
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