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发明名称
UNIVERSAL KEYBOARD
摘要
申请公布号
US3494550(A)
申请公布日期
1970.02.10
申请号
USD3494550
申请日期
1967.01.13
申请人
INTERN. BUSINESS MACHINES CORP.
发明人
ROBERT K. HAYES;LOUIS H. SEDARIS
分类号
H01H13/70;(IPC1-7):G06C7/02;G06C25/00
主分类号
H01H13/70
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代理人
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