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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Publication date
Priority claimed from FR7834616Aexternal-prioritypatent/FR2443436B1/en
Priority claimed from AT0779179Aexternal-prioritypatent/AT379126B/en
Application filed by Saint GobainfiledCriticalSaint Gobain
Priority to AT0073785ApriorityCriticalpatent/AT380681B/en
Publication of ATA73785ApublicationCriticalpatent/ATA73785A/en
Application grantedgrantedCritical
Publication of AT380681BpublicationCriticalpatent/AT380681B/en