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发明名称
Cylindrical strainer or filter units
摘要
申请公布号
US2746552(A)
申请公布日期
1956.05.22
申请号
US19510218757
申请日期
1951.04.02
申请人
SOCIETE ANONYME DITE: ETABLISSEMENTS GROSPAS
发明人
GROSPAS PIERRE JOSEPH
分类号
E03B3/20;E21B43/08
主分类号
E03B3/20
代理机构
代理人
主权项
地址
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