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经营范围
发明名称
Improvements in or relating to rotary ejector apparatus for producing vacuum
摘要
申请公布号
GB431779(A)
申请公布日期
1935.07.11
申请号
GB19330034849
申请日期
1933.12.11
申请人
ADOLF GUSTAV KOBIOLKE;ARTHUR WILLIAM FITZPATRICK
发明人
分类号
F04F5/42
主分类号
F04F5/42
代理机构
代理人
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