Improvements in the production of branch openings in tubes or headers,申请号GB19530007611-传众专利搜索

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发明名称	Improvements in the production of branch openings in tubes or headers
摘要
申请公布号	GB759146(A)	申请公布日期	1956.10.17
申请号	GB19530007611	申请日期	1953.03.19
申请人	ANDRE HUET	发明人
分类号	B21C37/29	主分类号	B21C37/29
代理机构		代理人
主权项
地址

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