Improvements in the manufacture of air screws,申请号GB19320034195-传众专利搜索

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发明名称	Improvements in the manufacture of air screws
摘要
申请公布号	GB394584(A)	申请公布日期	1933.06.29
申请号	GB19320034195	申请日期	1932.12.02
申请人	SOCIETA ANONIMA ALFA ROMEO	发明人
分类号	B21D53/78	主分类号	B21D53/78
代理机构		代理人
主权项
地址

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