IMPROVEMENTS IN MACHINES FOR MANUFACTURING HELICALLY-SEAMEDTUBING,申请号GB19690015820-传众专利搜索

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发明名称	IMPROVEMENTS IN MACHINES FOR MANUFACTURING HELICALLY-SEAMEDTUBING
摘要
申请公布号	GB1211505(A)	申请公布日期	1970.11.11
申请号	GB19690015820	申请日期	1969.03.26
申请人	EINO KALERVO MALKKI;VALENTIN SILDE	发明人	EINO KALERVO MALKKI;VALENTIN SILDE
分类号	B21C37/12;B23K31/02	主分类号	B21C37/12
代理机构		代理人
主权项
地址

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