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发明名称
Improvements in or relating to maps, charts and the like
摘要
申请公布号
GB619023(A)
申请公布日期
1949.03.02
申请号
GB19460034406
申请日期
1946.11.20
申请人
ARTHUR PAUL HUBNER;W. & A. K. JOHNSTON LIMITED
发明人
分类号
G09B29/04
主分类号
G09B29/04
代理机构
代理人
主权项
地址
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