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发明名称
KEYBOARD LOGIC SYSTEM
摘要
申请公布号
US3612765(A)
申请公布日期
1971.10.12
申请号
USD3612765
申请日期
1969.05.28
申请人
CREED & CO.
发明人
ROGER WILLIAM DAWSON
分类号
H04L25/40;(IPC1-7):H04L15/12
主分类号
H04L25/40
代理机构
代理人
主权项
地址
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