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公开(公告)号：US3427120A
公开(公告)日：1969-02-11
申请号：US3427120D
申请日：1963-12-17
Applicant: AGENCY IND SCIENCE TECHN
Inventor： SHINDO AKIO , FUJII ROKURO , SOUMA ISAO
CPC classification number: D01F9/21 , Y10S264/19
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