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Priority claimed from GB838312742Aexternal-prioritypatent/GB8312742D0/en
Priority claimed from GB848404527Aexternal-prioritypatent/GB8404527D0/en
Application filed by Winifred Annie Watt, Young George EfiledCriticalWinifred Annie Watt
Priority claimed from EP84303046Aexternal-prioritypatent/EP0127351B1/de
Application grantedgrantedCritical
Publication of ATE45762T1publicationCriticalpatent/ATE45762T1/de