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经营范围
发明名称
Improvements in or relating to cylindrical objects manufactured by an extrusion process
摘要
申请公布号
GB620901(A)
申请公布日期
1949.03.31
申请号
GB19470002894
申请日期
1947.01.30
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
B21C23/08;F04C18/08
主分类号
B21C23/08
代理机构
代理人
主权项
地址
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