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发明名称
Improvements relating to signalling apparatus
摘要
申请公布号
GB1134184(A)
申请公布日期
1968.11.20
申请号
GB19650029837
申请日期
1965.07.14
申请人
ASSOCIATED ELECTRICAL INDUSTRIES LIMITED
发明人
MACKENZIE THOMAS HERBERT
分类号
H04Q9/00;H04Q9/06
主分类号
H04Q9/00
代理机构
代理人
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地址
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