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.)
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Priority claimed from FR811158Aexternal-prioritypatent/FR1309812A/fr
Application filedfiledCritical
Priority to FR837273ApriorityCriticalpatent/FR567M/fr
Application grantedgrantedCritical
Publication of FR567MpublicationCriticalpatent/FR567M/fr
Priority claimed from CH77568Aexternal-prioritypatent/CH510997A/de
Priority claimed from CH77569Aexternal-prioritypatent/CH564035A5/xx