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经营范围
发明名称
Improvements in or relating to devices for aerial signalling especially those for publicity purposes
摘要
申请公布号
GB332128(A)
申请公布日期
1930.07.17
申请号
GB19290028182
申请日期
1929.09.17
申请人
LOUIS BLERIOT
发明人
分类号
G09F21/12
主分类号
G09F21/12
代理机构
代理人
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