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发明名称
Selector apparatus
摘要
申请公布号
US2338131(A)
申请公布日期
1944.01.04
申请号
US19430471433
申请日期
1943.01.06
申请人
TELETYPE CORPORATION
发明人
POTTS LOUIS M.
分类号
H04L17/12
主分类号
H04L17/12
代理机构
代理人
主权项
地址
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