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发明名称
KEYBOARDS
摘要
申请公布号
GB1472851(A)
申请公布日期
1977.05.11
申请号
GB19730016940
申请日期
1973.04.09
申请人
ALPHAMERIC KEYBOARDS LTD
发明人
分类号
H01H13/14;H01H13/52;(IPC1-7):H01H13/56;H01H13/20;H01H36/00
主分类号
H01H13/14
代理机构
代理人
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地址
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