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发明名称
Improvements in or relating to valves
摘要
申请公布号
GB561377(A)
申请公布日期
1944.05.17
申请号
GB19420015997
申请日期
1942.11.12
申请人
WALTER ERNST
发明人
分类号
F15B13/04
主分类号
F15B13/04
代理机构
代理人
主权项
地址
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