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发明名称
IMPROVEMENTS IN OR RELATING TO KEYBOARD ARRANGEMENTS
摘要
申请公布号
HK82979(A)
申请公布日期
1979.12.14
申请号
HK19790000829
申请日期
1979.12.06
申请人
SUWA SEIKOSHA KK
发明人
分类号
G06F3/023;H03M11/04;H03M11/22;(IPC1-7):G06F3/02
主分类号
G06F3/023
代理机构
代理人
主权项
地址
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