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发明名称
DIGITAL DATA TRANSMISSION
摘要
申请公布号
GB1203141(A)
申请公布日期
1970.08.26
申请号
GB19680007946
申请日期
1968.02.19
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
FRITZ IRRO;PHILIP DE BACKER
分类号
H04L7/033;H04L25/48
主分类号
H04L7/033
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代理人
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