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经营范围
发明名称
DATA TRANSMISSION SYSTEM
摘要
申请公布号
JPH03217140(A)
申请公布日期
1991.09.24
申请号
JP19900012910
申请日期
1990.01.23
申请人
HIGASHI NIPPON RIYOKAKU TETSUDO KK;SEIKOSHA:KK
发明人
YOSHIKAWA MASAYUKI;HASHIURA AKIRA;SATO RYOSUKE
分类号
H04L12/42
主分类号
H04L12/42
代理机构
代理人
主权项
地址
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