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发明名称
Trappe téles opique pour l'obturation de silos, trémies ou appareils analogues
摘要
申请公布号
FR845455(A)
申请公布日期
1939.08.24
申请号
FRD845455
申请日期
1938.04.28
申请人
ETABLISSEMENTS METALLURGIQUES BOYER
发明人
BOURGEOT GUSTAVE
分类号
B65D90/64
主分类号
B65D90/64
代理机构
代理人
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