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经营范围
发明名称
Perfectionnements dans les sablières
摘要
申请公布号
FR722317(A)
申请公布日期
1932.03.15
申请号
FRD722317
申请日期
1930.11.26
申请人
FREINS JOURDAIN MONNERET
发明人
分类号
B61C15/10
主分类号
B61C15/10
代理机构
代理人
主权项
地址
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