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经营范围
发明名称
Improvements in or relating to course indicating apparatus for dirigible craft
摘要
申请公布号
GB666538(A)
申请公布日期
1952.02.13
申请号
GB19490023321
申请日期
1949.09.08
申请人
THE DECCA RECORD COMPANY LIMITED;GRAHAM ESTYN ROBERTS
发明人
分类号
G01C21/00
主分类号
G01C21/00
代理机构
代理人
主权项
地址
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