Sealing ring and method of making it,申请号US19280263679-传众专利搜索

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发明名称	Sealing ring and method of making it
摘要
申请公布号	US1856335(A)	申请公布日期	1932.05.03
申请号	US19280263679	申请日期	1928.03.22
申请人	AMERICAN CAN COMPANY	发明人	HOTHERSALL JOHN M.
分类号	B21D19/12;B21D51/38	主分类号	B21D19/12
代理机构		代理人
主权项
地址

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