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发明名称
ARRANGEMENT FOR THE RECIPROCAL ACCEPTANCE OF CALLS
摘要
申请公布号
US3636267(A)
申请公布日期
1972.01.18
申请号
USD3636267
申请日期
1969.06.09
申请人
SIEMENS AG.
发明人
ROBERT FRITZ;HORST BECKH;NORBERT TORGGLER
分类号
H04Q3/00;(IPC1-7):H04M3/54
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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