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发明名称
Einrichtung zur Aufzeichnung von Schallschwingungen in einer spiralförmigen Rille eines plattenförmigen Trägers
摘要
申请公布号
CH323658(A)
申请公布日期
1957.08.15
申请号
CHD323658
申请日期
1954.03.23
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
BOONTJE,JAN;LAUTERSLAGER,HENK
分类号
G11B3/64
主分类号
G11B3/64
代理机构
代理人
主权项
地址
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