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发明名称
Improvements in traffic control signals
摘要
申请公布号
GB376870(A)
申请公布日期
1932.07.21
申请号
GB19310012906
申请日期
1931.05.01
申请人
WILLIAM PERCIVAL ROBINSON;LAURENCE HARRISON
发明人
分类号
G08G1/09
主分类号
G08G1/09
代理机构
代理人
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地址
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