METHOD OF ROLLING RINGS,申请号PL19780211944-传众专利搜索

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发明名称	METHOD OF ROLLING RINGS
摘要
申请公布号	PL114738(B2)	申请公布日期	1981.02.28
申请号	PL19780211944	申请日期	1978.12.19
申请人		发明人
分类号	B21B;B21H1/12;(IPC1-7):B21H1/12	主分类号	B21B
代理机构		代理人
主权项
地址

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