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经营范围
发明名称
Improvements in feed and discharge air-lock apparatus for vacuum dryers
摘要
申请公布号
GB516163(A)
申请公布日期
1939.12.22
申请号
GB19380024408
申请日期
1938.08.19
申请人
KARL DIENST
发明人
分类号
F26B17/12
主分类号
F26B17/12
代理机构
代理人
主权项
地址
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