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Application filedfiledCritical
Priority to NL6601021ApriorityCriticalpatent/NL6601021A/xx
Priority to DE19671582163prioritypatent/DE1582163A1/de
Priority to GB100967Aprioritypatent/GB1164901A/en
Priority to FR90348Aprioritypatent/FR1507639A/fr
Priority to AT22267Aprioritypatent/AT276831B/de
Priority to BE692387Dprioritypatent/BE692387A/xx
Publication of NL6601021ApublicationCriticalpatent/NL6601021A/xx