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公开(公告)号：US2968174A
公开(公告)日：1961-01-17
申请号：US69428057
申请日：1957-11-04
Applicant: HOOVER CO
Inventor： CHARLTON BELL WILLIAM , GEORGE DUNN HAROLD , HARROW WEALD , KERSHAW HAYDON EDWARD , WILLIAM PLINT DENNIS JOHN , RALPH SEARLE WALTER WILLIAM
IPC: D06F23/02
CPC classification number: D06F23/02
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公开(公告)号：US2814711A
公开(公告)日：1957-11-26
申请号：US53190155
申请日：1955-09-01
Applicant: HOOVER CO
Inventor： WILLIAM PLINT DENNIS JOHN
IPC: D06F75/26 , G05D23/275 , H01H37/52 , H05B1/02
CPC classification number: H05B1/0213 , D06F75/26 , G05D23/2754 , H01H37/52 , H05B1/0255
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