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经营范围
发明名称
Compteur de temps, notamment pour conversations téléphoniques
摘要
申请公布号
CH334719(A)
申请公布日期
1958.12.15
申请号
CHD334719
申请日期
1957.11.13
申请人
BAUMGARTNER FRERES S. A.
发明人
DUCOMMUN,GEORGES
分类号
G04F3/02;H04M15/10;H04M15/28
主分类号
G04F3/02
代理机构
代理人
主权项
地址
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