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Priority claimed from GB848402948Aexternal-prioritypatent/GB8402948D0/en
Priority claimed from GB858501291Aexternal-prioritypatent/GB8501291D0/en
Priority claimed from SU853857482Aexternal-prioritypatent/SU1414308A3/en
Application filed by Bernard Trevor MatthewsfiledCriticalBernard Trevor Matthews
Publication of LV5657A3publicationCriticalpatent/LV5657A3/en