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 DE19863607727external-prioritypatent/DE3607727A1/de
Application filed by Telefonbau & Normalzeit GmbhfiledCriticalTelefonbau & Normalzeit Gmbh
Application grantedgrantedCritical
Publication of ATE74245T1publicationCriticalpatent/ATE74245T1/de