Legal status (The legal status 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 status listed.)
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
Application grantedgrantedCritical
Publication of FR537831ApublicationCriticalpatent/FR537831A/fr
Dispositif permettant de voir par transparence, au moyen d'écrans convenablement colorés, différents motifs de publicité ou autres, portés par une même surface