Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/248,947external-prioritypatent/US4415230A/en
Priority claimed from US06/249,022external-prioritypatent/US4360371A/en
Priority claimed from US06/253,224external-prioritypatent/US4395270A/en
Priority claimed from IN353/CAL/82Aexternal-prioritypatent/IN156891B/en
Application filed by Corning Glass WorksfiledCriticalCorning Glass Works
Priority to IN113/MAS/85ApriorityCriticalpatent/IN162977B/en
Publication of IN162977BpublicationCriticalpatent/IN162977B/en