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
Priority claimed from BE156041Aexternal-prioritypatent/BE828713A/nl
Application filedfiledCritical
Priority to BE164293ApriorityCriticalpatent/BE838537R/xx
Priority to FR7613346Aprioritypatent/FR2310107A1/fr
Application grantedgrantedCritical
Publication of BE838537RpublicationCriticalpatent/BE838537R/xx
Priority to DE19767626943prioritypatent/DE7626943U1/de