Method of making ball bearing retainers,申请号US19460710446-传众专利搜索

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发明名称	Method of making ball bearing retainers
摘要
申请公布号	US2480258(A)	申请公布日期	1949.08.30
申请号	US19460710446	申请日期	1946.11.18
申请人	INTERNATIONAL HARVESTER COMPANY	发明人	PARSONS HARRY N.
分类号	B21D53/12	主分类号	B21D53/12
代理机构		代理人
主权项
地址

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