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发明名称
Procédé pour l'extinction d'enregistrements sonores obtenus par voie magnétique
摘要
申请公布号
FR874773(A)
申请公布日期
1942.08.26
申请号
FRD874773
申请日期
1941.08.20
申请人
LICENTIA PATENT-VERWALTUNGS-GESELLSCHAFT M. B. H.
发明人
分类号
G11B5/02;G11B5/03
主分类号
G11B5/02
代理机构
代理人
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地址
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