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发明名称
FEED OIL RESTRICTION DEVICE FOR OIL-SEALED ROTARY VACUUM PUMP
摘要
申请公布号
JPH03213691(A)
申请公布日期
1991.09.19
申请号
JP19900011074
申请日期
1990.01.19
申请人
HITACHI KOKI CO LTD
发明人
NEMOTO TOSHIO;ISHIKAWA MITSUSACHI
分类号
F04C25/02
主分类号
F04C25/02
代理机构
代理人
主权项
地址
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