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发明名称
Keyboard operation accessory device
摘要
申请公布号
GB9622802(D0)
申请公布日期
1997.01.08
申请号
GB19960022802
申请日期
1996.11.01
申请人
DRAPER, JOHN W F
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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