US Patent 8770274 Shear seal blowout preventer
Patent 8770274 was granted and assigned to National Oilwell Varco on July, 2014 by the United States Patent and Trademark Office.
Currently, there are no issues on this topic.
Find more entities like US Patent 8770274 Shear seal blowout preventer
Use the Golden Query Tool to find similar entities by any field in the Knowledge Graph, including industry, location, and more.
