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发明名称
Verfahren zum tiegelfreien Zonenschmelzen
摘要
申请公布号
AT225239(B)
申请公布日期
1963.01.10
申请号
AT19610004920
申请日期
1961.06.26
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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