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 Hydril CofiledCriticalHydril Co
Priority to IE34572ApriorityCriticalpatent/IE36208B1/en
Publication of IE36208B1publicationCriticalpatent/IE36208B1/en