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 NL8200195Aexternal-prioritypatent/NL180449C/xx
Application filed by Estel Nl DraadindfiledCriticalEstel Nl Draadind
Priority claimed from EP82200892Aexternal-prioritypatent/EP0071292B1/de
Application grantedgrantedCritical
Publication of ATE13324T1publicationCriticalpatent/ATE13324T1/de