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发明名称
Compteur-enregistreur pour taxes de conversations téléphoniques
摘要
申请公布号
FR806683(A)
申请公布日期
1936.12.22
申请号
FRD806683
申请日期
1936.05.22
申请人
LANDIS & GYR S. A.
发明人
分类号
H04M15/28;H04M17/02
主分类号
H04M15/28
代理机构
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