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经营范围
发明名称
VARIABLE DATA RATE CHANNEL
摘要
申请公布号
GB8717609(D0)
申请公布日期
1987.09.03
申请号
GB19870017609
申请日期
1987.07.24
申请人
LESLIE, I M;BURREN, J W
发明人
分类号
H04J3/16
主分类号
H04J3/16
代理机构
代理人
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地址
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