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经营范围
发明名称
Improvements in character indicators
摘要
申请公布号
GB951758(A)
申请公布日期
1964.03.11
申请号
GB19590020334
申请日期
1959.06.15
申请人
JOHN HANDLEY
发明人
分类号
B61L25/08;G09F11/06;H04M3/64
主分类号
B61L25/08
代理机构
代理人
主权项
地址
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