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发明名称
Improvements in rotary vacuum pumps
摘要
申请公布号
GB506341(A)
申请公布日期
1939.05.23
申请号
GB19370032210
申请日期
1937.11.23
申请人
KLEIN, SCHANZLIN & BECKER, AKTIENGESELLSCHAFT
发明人
分类号
F04C18/344;F04C25/00
主分类号
F04C18/344
代理机构
代理人
主权项
地址
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