Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filedfiledCritical
Publication of BE705094ApublicationCriticalpatent/BE705094A/fr
Dispositif de securite pour empecher l'ouverture de l'exterieur d'une fenetre de toit, tout en conservant l'utilisation du systeme de ventilation existant de cette fenetre