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1.Twisted strands and non-woven filtering media made of such strands 失效
Title translation: 由这种股线制成的扭绞股和非织造过滤介质公开(公告)号:US3351205A
公开(公告)日:1967-11-07
申请号:US19716862
申请日:1962-05-18
Applicant: LINDSAY WIRE WEAVING CO
Inventor: BUTLER CLARENCE A , RICHARD LAZZARO DOMINIC
IPC: B01D39/08
CPC classification number: B01D39/1623 , B01D2239/0464 , B01D2239/065 , B01D2239/086