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Priority claimed from US07/184,626external-prioritypatent/US4912810A/en
Application filed by Cowsar Duzitiall Equipment CorfiledCriticalCowsar Duzitiall Equipment Cor
Publication of NO895177D0publicationCriticalpatent/NO895177D0/en
Publication of NO895177LpublicationCriticalpatent/NO895177L/en