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 CH559934B5publicationCriticalpatent/CH559934B5/xx
Application filed by PortescapfiledCriticalPortescap
Priority to CH73872ApriorityCriticalpatent/CH559934A/fr
Priority to CH73872Dprioritypatent/CH73872A4/xx
Priority to FR7236580Aprioritypatent/FR2168286B1/fr
Priority to IT3102372Aprioritypatent/IT969991B/it
Priority to DE19722263464prioritypatent/DE2263464C3/de
Publication of CH559934ApublicationCriticalpatent/CH559934A/fr