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发明名称
Perfectionnements aux instruments et appareils téléphoniques
摘要
申请公布号
FR952595(A)
申请公布日期
1949.11.21
申请号
FRD952595
申请日期
1947.08.29
申请人
发明人
BAILEY CHARLES;BAILEY CHARLES NOEL
分类号
H04M19/04
主分类号
H04M19/04
代理机构
代理人
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地址
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