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发明名称
Switching system control
摘要
申请公布号
US2942253(A)
申请公布日期
1960.06.21
申请号
US19560622930
申请日期
1956.11.19
申请人
HUPP CORPORATION
发明人
PEDERSON CARL N.
分类号
H04Q9/14
主分类号
H04Q9/14
代理机构
代理人
主权项
地址
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