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Priority claimed from GB25288/66Aexternal-prioritypatent/GB1176796A/en
Application filed by Paxall IncfiledCriticalPaxall Inc
Application grantedgrantedCritical
Publication of FI53551BpublicationCriticalpatent/FI53551B/fi
Publication of FI53551CpublicationCriticalpatent/FI53551C/en