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发明名称
ELECTRIC SWITCH KEYBOARD
摘要
申请公布号
GB1543121(A)
申请公布日期
1979.03.28
申请号
GB19770021128
申请日期
1977.05.19
申请人
SUWA SEIKOSHA KK
发明人
分类号
G04G9/00;G04G17/00;H01H13/702;H01H13/703;(IPC1-7):H01H13/50;G04B47/00
主分类号
G04G9/00
代理机构
代理人
主权项
地址
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