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经营范围
发明名称
FILTERING DIAPHRAGMS
摘要
申请公布号
US3540598(A)
申请公布日期
1970.11.17
申请号
USD3540598
申请日期
1968.05.13
申请人
D'ETUDES POUR PAROIS FILTRANTES PARFIL:SOC.
发明人
GUY J.J. MARIE
分类号
B01D69/10;C25B13/04;D21H19/32;(IPC1-7):B01D39/18;B01D31/00
主分类号
B01D69/10
代理机构
代理人
主权项
地址
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