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发明名称
Dispositif pour l'élargissement des plateaux à ridelles
摘要
申请公布号
FR973946(A)
申请公布日期
1951.02.16
申请号
FRD973946
申请日期
1948.09.04
申请人
发明人
PERRAULT BERNARD
分类号
B62B1/12
主分类号
B62B1/12
代理机构
代理人
主权项
地址
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