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
Publication of IE19265LpublicationCriticalpatent/IE19265L/en
Application filed by Western Electric CofiledCriticalWestern Electric Co
Priority to IE27947ApriorityCriticalpatent/IE19265L/en