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经营范围
发明名称
THREAD-GROOVED VACUUM PUMP
摘要
申请公布号
JPH03222895(A)
申请公布日期
1991.10.01
申请号
JP19900017213
申请日期
1990.01.26
申请人
HITACHI KOKI CO LTD
发明人
TOYOSHIMA TAKESHI;OGURA MITSUO
分类号
F04D19/04
主分类号
F04D19/04
代理机构
代理人
主权项
地址
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