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发明名称
Portillon de sûreté de passage à niveau
摘要
申请公布号
FR722121(A)
申请公布日期
1932.03.11
申请号
FRD722121
申请日期
1931.08.19
申请人
发明人
LACOSTE HERMAN
分类号
B61L29/02
主分类号
B61L29/02
代理机构
代理人
主权项
地址
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