SURFACE TREATMENT OF AXIAL-FLOW VACUUM PUMP,申请号JP19890246048-传众专利搜索

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发明名称	SURFACE TREATMENT OF AXIAL-FLOW VACUUM PUMP
摘要
申请公布号	JPH03107598(A)	申请公布日期	1991.05.07
申请号	JP19890246048	申请日期	1989.09.20
申请人	NTN CORP	发明人	OZAKI TAKAMI
分类号	F04D19/04;C23C14/00;C23C14/22	主分类号	F04D19/04
代理机构		代理人
主权项
地址

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