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Priority claimed from GB888808764Aexternal-prioritypatent/GB8808764D0/en
Priority claimed from GB888819003Aexternal-prioritypatent/GB8819003D0/en
Priority claimed from GB898905107Aexternal-prioritypatent/GB8905107D0/en
Application filed by Liftsonic LtdfiledCriticalLiftsonic Ltd
Priority to IN13CA1993priorityCriticalpatent/IN182851B/en
Publication of IN182851BpublicationCriticalpatent/IN182851B/en