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
Application filed by United States Gypsum CofiledCriticalUnited States Gypsum Co
Priority to IE145683ApriorityCriticalpatent/IE831456L/en
Publication of IE831456LpublicationCriticalpatent/IE831456L/en