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发明名称
Dispositif de fermeture de trou d'homme et d'ouvertures analogues, des citernes, tanks et autres réservoirs analogues
摘要
申请公布号
FR907567(A)
申请公布日期
1946.03.15
申请号
FRD907567
申请日期
1944.04.20
申请人
发明人
DIGARD GEORGES
分类号
F16J13/18
主分类号
F16J13/18
代理机构
代理人
主权项
地址
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