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发明名称
Systèmes de communications téléphoniques ou analogues
摘要
申请公布号
FR835041(A)
申请公布日期
1938.12.09
申请号
FRD835041
申请日期
1938.03.09
申请人
LE MATERIEL TELEPHONIQUE SOCIETE ANONYME
发明人
分类号
H04M15/00;H04M15/04;H04M15/38
主分类号
H04M15/00
代理机构
代理人
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地址
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