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公开(公告)号：US1971090A
公开(公告)日：1934-08-21
申请号：US58386831
申请日：1931-12-30
Applicant: JEAN ZWICKY , FARNHAM ROYAL , FRANCIS HUNT WILLIAM , ALBERT TYLER SYDNEY
Inventor： JEAN ZWICKY , FARNHAM ROYAL , FRANCIS HUNT WILLIAM , ALBERT TYLER SYDNEY
CPC classification number: B01D35/16 , B01D29/15 , B01D29/66 , B01D2201/0461
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