Machining method of the races of ball bearings,申请号US19380227432-传众专利搜索

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发明名称	Machining method of the races of ball bearings
摘要
申请公布号	US2223799(A)	申请公布日期	1940.12.03
申请号	US19380227432	申请日期	1938.08.29
申请人	THE FIRM ROULEMENTS A BILLES MINIATURES S. A.	发明人	ANNEN ROBERT
分类号	B21K1/04	主分类号	B21K1/04
代理机构		代理人
主权项
地址

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