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发明名称
Improvements in or relating to apparatus for automatically indicating the passage of train end carriages
摘要
申请公布号
GB346344(A)
申请公布日期
1931.04.01
申请号
GB19300000071
申请日期
1930.01.01
申请人
OTTO HAMPKE
发明人
分类号
B61L1/14;B61L13/00
主分类号
B61L1/14
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代理人
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