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经营范围
发明名称
Keyboard construction
摘要
申请公布号
GB1103050(A)
申请公布日期
1968.02.14
申请号
GB19650034554
申请日期
1965.08.12
申请人
PRATT, READ & CO., INCORPORATED
发明人
分类号
G10C3/12
主分类号
G10C3/12
代理机构
代理人
主权项
地址
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