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Application filed by R RaffertyfiledCriticalR Rafferty
Priority to ZA765649ApriorityCriticalpatent/ZA765649B/en
Priority to GB39187/77Aprioritypatent/GB1537614A/en
Priority to DE7729286Uprioritypatent/DE7729286U1/en
Publication of ZA765649BpublicationCriticalpatent/ZA765649B/en