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发明名称
Electronic symbols combining functional capabilities with symbolic graphic representation
摘要
申请公布号
US3416240(A)
申请公布日期
1968.12.17
申请号
US19670616741
申请日期
1967.01.11
申请人
ALFRED W. BARBER
发明人
BARBER ALFRED W.
分类号
G09B23/18
主分类号
G09B23/18
代理机构
代理人
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地址
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