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经营范围
发明名称
Improvements in rotary valves
摘要
申请公布号
GB485280(A)
申请公布日期
1938.05.17
申请号
GB19380000084
申请日期
1938.01.03
申请人
ELEKTRONMETALL G.M.B.H.
发明人
分类号
B64C13/40
主分类号
B64C13/40
代理机构
代理人
主权项
地址
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