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经营范围
发明名称
Improvements in annular valves
摘要
申请公布号
GB375082(A)
申请公布日期
1932.06.23
申请号
GB19310018667
申请日期
1931.06.27
申请人
KURT SCHOENE
发明人
分类号
F16K15/12
主分类号
F16K15/12
代理机构
代理人
主权项
地址
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