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发明名称
Improvements in and relating to spring-operated crossings, points and the like for railways and the like
摘要
申请公布号
GB482477(A)
申请公布日期
1938.03.30
申请号
GB19370000590
申请日期
1937.01.08
申请人
ALAN EDWARD SHAVE;LONDON PASSENGER TRANSPORT BOARD
发明人
分类号
B61L5/00
主分类号
B61L5/00
代理机构
代理人
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地址
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