Method of making tubular inserts,申请号US19340758750-传众专利搜索

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发明名称	Method of making tubular inserts
摘要
申请公布号	US2216201(A)	申请公布日期	1940.10.01
申请号	US19340758750	申请日期	1934.12.22
申请人	GENERAL MOTORS CORPORATION	发明人	KELLER CLARENCE J.
分类号	B21C23/03	主分类号	B21C23/03
代理机构		代理人
主权项
地址

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