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专利名称:Improvements relating to filters发明人:Ward, Trevor申请号:EP81303979.9申请日:19810901公开号:EP0047621A2公开日:19820317
专利附图:
摘要:Array
申请人:PLASTICISERS LIMITED
地址:Old Mills Drighlington, Nr. Bradford, BD11 1BY Yorkshire GB
国籍:GB
代理机构:Stringer, David Hiram
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