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 FR8319017Aexternal-prioritypatent/FR2555591B1/fr
Priority claimed from IN794/CAL/84Aexternal-prioritypatent/IN159985B/en
Application filed by Saint Gobain IsoverfiledCriticalSaint Gobain Isover
Priority to IN175/CAL/87ApriorityCriticalpatent/IN164738B/en
Publication of IN164738BpublicationCriticalpatent/IN164738B/en