Method and apparatus for forming finely perforated rings,申请号GB19590006408-传众专利搜索

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发明名称	Method and apparatus for forming finely perforated rings
摘要
申请公布号	GB847454(A)	申请公布日期	1960.09.07
申请号	GB19590006408	申请日期	1959.02.24
申请人	GUSTIN-BACON MANUFACTURING COMPANY	发明人
分类号	B22D13/04	主分类号	B22D13/04
代理机构		代理人
主权项
地址

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