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发明名称
Dispositif d'éclissage des rails pour chemins de fer
摘要
申请公布号
FR833349(A)
申请公布日期
1938.10.19
申请号
FRD833349
申请日期
1938.02.17
申请人
发明人
PAUL KETTLER
分类号
E01B11/04
主分类号
E01B11/04
代理机构
代理人
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