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Priority claimed from US06/471,188external-prioritypatent/US4528180A/en
Priority claimed from IN510/CAL/85Aexternal-prioritypatent/IN164161B/en
Application filed by Schaeffer Hans AfiledCriticalSchaeffer Hans A
Priority to IN856/CAL/88ApriorityCriticalpatent/IN166889B/en
Publication of IN166889BpublicationCriticalpatent/IN166889B/en