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经营范围
发明名称
MAGNETIC ERASING HEAD
摘要
申请公布号
CA599257(A)
申请公布日期
1960.06.07
申请号
CAD599257
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
HERMANUS J. DE WITT;DERK KLEIS
分类号
主分类号
代理机构
代理人
主权项
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