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发明名称
Tonalité de sonnerie téléphonique
摘要
申请公布号
FR90647(E)
申请公布日期
1968.01.19
申请号
FR19660068449
申请日期
1966.07.06
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
WHY JOHN FREDERICK
分类号
H04M19/04
主分类号
H04M19/04
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