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发明名称
Perfectionnements aux engins d'extraction
摘要
申请公布号
FR1147664(A)
申请公布日期
1957.11.28
申请号
FRD1147664
申请日期
1956.04.12
申请人
VENOT & COMPAGNIE
发明人
HUART LEON
分类号
B66B17/10;B66B17/26
主分类号
B66B17/10
代理机构
代理人
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