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发明名称
Fernsprechapparat mit Schallaustrittsoeffnungen in der Gehaeusewand
摘要
申请公布号
DE930569(C)
申请公布日期
1955.07.18
申请号
DE1953M018749
申请日期
1953.05.29
申请人
STANDARD ELEKTRIZITAETS-GESELLSCHFT A. G.
发明人
AMANN MAX
分类号
H04M1/02
主分类号
H04M1/02
代理机构
代理人
主权项
地址
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