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经营范围
发明名称
Multiplex transmission system
摘要
申请公布号
US2878319(A)
申请公布日期
1959.03.17
申请号
US19570667872
申请日期
1957.06.25
申请人
LEEK NATHANIEL L
发明人
LEEK NATHANIEL L.
分类号
H04J9/00
主分类号
H04J9/00
代理机构
代理人
主权项
地址
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