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Publication date
Priority claimed from US05/929,415external-prioritypatent/US4229070A/en
Priority claimed from IN771/CAL/79Aexternal-prioritypatent/IN154891B/en
Application filed by Corning Glass WorksfiledCriticalCorning Glass Works
Priority to IN525/CAL/83ApriorityCriticalpatent/IN156528B/en
Publication of IN156528BpublicationCriticalpatent/IN156528B/en