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 BE728597ApublicationCriticalpatent/BE728597A/fr
Procede de preparation de feuilles ou panneaux destines a etre utilises en tant que separateurs de batteries d'accumulateurs a l'acide sulfurique