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发明名称
Type-printing arrangements
摘要
申请公布号
US2927677(A)
申请公布日期
1960.03.08
申请号
US19570651286
申请日期
1957.04.08
申请人
NORMAN SAXBY ROBERT
发明人
SAXBY ROBERT NORMAN
分类号
H04L17/22
主分类号
H04L17/22
代理机构
代理人
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