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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain SA
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 US26540763external-prioritypatent/US3175745A/en
Application filed by Compagnie de Saint Gobain SAfiledCriticalCompagnie de Saint Gobain SA
Priority to FR967553ApriorityCriticalpatent/FR1399606A/fr
Application grantedgrantedCritical
Publication of FR1399606ApublicationCriticalpatent/FR1399606A/fr