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发明名称
VACUUM EXHAUST DEVICE
摘要
申请公布号
JPH02294574(A)
申请公布日期
1990.12.05
申请号
JP19890114954
申请日期
1989.05.10
申请人
HITACHI LTD
发明人
UCHIDA RIICHI
分类号
F04C25/02;F04B37/16;F04D19/04
主分类号
F04C25/02
代理机构
代理人
主权项
地址
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