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发明名称
Elément destiné à recevoir un enregistrement sonore et procédé de fabrication de cet élément.
摘要
申请公布号
CH291554(A)
申请公布日期
1953.06.30
申请号
CHD291554
申请日期
1950.04.11
申请人
DICTAPHONE CORPORATION
发明人
CORPORATION DICTAPHONE
分类号
G11B5/004;G11B5/74
主分类号
G11B5/004
代理机构
代理人
主权项
地址
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