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发明名称
ANNULAR MAGNETIC HEAD AND METHODS FOR THEIR MANUFACTURE
摘要
申请公布号
CA707050(A)
申请公布日期
1965.03.30
申请号
CAD707050
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
JOHANNES O. M. VAN LANGEN;THEO T. BOERSMA
分类号
主分类号
代理机构
代理人
主权项
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