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Priority to NL7307522ApriorityCriticalpatent/NL7307522A/xx
Priority to SE7406938Aprioritypatent/SE396182B/xx
Priority to DE19742425650prioritypatent/DE2425650A1/de
Priority to CA201,126Aprioritypatent/CA1012651A/en
Priority to FR7418797Aprioritypatent/FR2232156A1/fr
Priority to JP49060364Aprioritypatent/JPS5033707A/ja
Publication of NL7307522ApublicationCriticalpatent/NL7307522A/xx