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发明名称
VACUUM PUMP
摘要
申请公布号
JPH01267391(A)
申请公布日期
1989.10.25
申请号
JP19880091439
申请日期
1988.04.15
申请人
HITACHI LTD
发明人
NISHIUCHI AKIRA
分类号
F04D19/04
主分类号
F04D19/04
代理机构
代理人
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