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发明名称
Perfectionnements aux barrières automatiques oscillantes des passages à niveau ou autres
摘要
申请公布号
FR783788(A)
申请公布日期
1935.07.18
申请号
FRD783788
申请日期
1934.03.28
申请人
发明人
MARTIN-ROUX JOSEPH
分类号
B61L29/22
主分类号
B61L29/22
代理机构
代理人
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