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.)
A ATTENHOFER AG
Original Assignee
A ATTENHOFER AG
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 CH408662Aexternal-prioritypatent/CH426586A/en
Application filed by A ATTENHOFER AGfiledCriticalA ATTENHOFER AG
Priority to FR930181ApriorityCriticalpatent/FR1352570A/en
Application grantedgrantedCritical
Publication of FR1352570ApublicationCriticalpatent/FR1352570A/en