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发明名称
Elektronisches Telephonwählsystem
摘要
申请公布号
AT206020(B)
申请公布日期
1959.11.10
申请号
AT19570007037
申请日期
1957.10.30
申请人
WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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