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发明名称
IMPROVEMENTS IN VACUUM PUMPS
摘要
申请公布号
GB9125850(D0)
申请公布日期
1992.02.05
申请号
GB19910025850
申请日期
1991.12.04
申请人
BOC GROUP, THE PLC
发明人
分类号
F04D17/00;F04D17/16;F04D19/04
主分类号
F04D17/00
代理机构
代理人
主权项
地址
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