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Filing date
Publication date
Application filed by Frederik BoonstrafiledCriticalFrederik Boonstra
Publication of BE600060ApublicationCriticalpatent/BE600060A/fr
BE600060A1960-02-121961-02-10Groupe ventilateur avec une ou plusieurs hélices et chicanes directrices, notamment pour un aspirateur de poussières.
BE600060A
(fr)