An improved pipe bender,申请号GB19490031279-传众专利搜索

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发明名称	An improved pipe bender
摘要
申请公布号	GB681192(A)	申请公布日期	1952.10.22
申请号	GB19490031279	申请日期	1949.12.06
申请人	JOHN WILLIAM GIBSON	发明人
分类号	B21D7/022	主分类号	B21D7/022
代理机构		代理人
主权项
地址

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