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Priority to JP13947580UpriorityCriticalpatent/JPS625968Y2/ja
Priority to GB8129374Aprioritypatent/GB2087015B/en
Publication of JPS5762168UpublicationCriticalpatent/JPS5762168U/ja
Application grantedgrantedCritical
Publication of JPS625968Y2publicationCriticalpatent/JPS625968Y2/ja
Vacuum brake booster with a valve for allowing atmospheric air into a variable pressure chamber, the position for opening of the valve being adjustable