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发明名称
Vorrichtung zur Gebührenregistrierung für Fernsprechanlagen.
摘要
申请公布号
CH204089(A)
申请公布日期
1939.04.15
申请号
CHD204089
申请日期
1938.07.15
申请人
MATHIAS,MAXIMILIAN,DR.
发明人
MATHIAS,MAXIMILIAN,DR.
分类号
H04M15/38
主分类号
H04M15/38
代理机构
代理人
主权项
地址
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