Improvements in or relating to rotary oil vacuum pumps,申请号GB19550020941-传众专利搜索

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发明名称	Improvements in or relating to rotary oil vacuum pumps
摘要
申请公布号	GB795204(A)	申请公布日期	1958.05.21
申请号	GB19550020941	申请日期	1955.07.20
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人	HOCKLY DAVID ALAN
分类号	F01C19/00;F01C21/08	主分类号	F01C19/00
代理机构		代理人
主权项
地址

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