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 of CH627608BpublicationCriticalpatent/CH627608B/de
Priority claimed from GB7123/76Aexternal-prioritypatent/GB1540631A/en
Application filed by Kurt IngendahlfiledCriticalKurt Ingendahl
Publication of CH627608GA3publicationCriticalpatent/CH627608GA3/de