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经营范围
发明名称
DIGITAL TRANSMISSION SYSTEM
摘要
申请公布号
JPH0222942(A)
申请公布日期
1990.01.25
申请号
JP19880174196
申请日期
1988.07.12
申请人
NEC CORP;NEC ENG LTD
发明人
TSUTSUI KOJI;IGARASHI ISAO
分类号
H04L5/22
主分类号
H04L5/22
代理机构
代理人
主权项
地址
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