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发明名称
Improvements in or relating to route or destination indicators
摘要
申请公布号
GB471767(A)
申请公布日期
1937.09.10
申请号
GB19360009719
申请日期
1936.04.02
申请人
ALBERT FIELDHOUSE KELLETT;GEORGE HAYES
发明人
分类号
G01C7/00
主分类号
G01C7/00
代理机构
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