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 GB919104271Aexternal-prioritypatent/GB9104271D0/en
Application filed by Hunting Oilfield Equipment HolfiledCriticalHunting Oilfield Equipment Hol
Publication of NO933063D0publicationCriticalpatent/NO933063D0/en
Publication of NO933063LpublicationCriticalpatent/NO933063L/en