Improvements in or relating to high-vacuum oil diffusion pumps,申请号GB19510027029-传众专利搜索

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发明名称	Improvements in or relating to high-vacuum oil diffusion pumps
摘要
申请公布号	GB686659(A)	申请公布日期	1953.01.28
申请号	GB19510027029	申请日期	1951.11.17
申请人	NATIONAL RESEARCH CORPORATION	发明人	LAWRANCE RICHARD B.
分类号	F04F9/00	主分类号	F04F9/00
代理机构		代理人
主权项
地址

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