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发明名称
Générateur de tonalité d'appel pour postes téléphoniques
摘要
申请公布号
FR1487773(A)
申请公布日期
1967.07.07
申请号
FR19660070871
申请日期
1966.07.26
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
WHY JOHN FREDERICK;PAPADOPOULOS ATHANASIOS
分类号
H04M19/04
主分类号
H04M19/04
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代理人
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