Method and apparatus for providing an annular channel in a tubular member,申请号GB19580014854-传众专利搜索

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发明名称	Method and apparatus for providing an annular channel in a tubular member
摘要
申请公布号	GB861507(A)	申请公布日期	1961.02.22
申请号	GB19580014854	申请日期	1958.05.09
申请人	ARMSTRONG SIDDELEY MOTORS LIMITED	发明人	RIMAN PERCY HERBERT;MARIS FRANK
分类号	B21D15/10;B21D22/12	主分类号	B21D15/10
代理机构		代理人
主权项
地址

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