U.S. federal trademark · Serial No. 74304426 · Reg. No. 1777775
thermal storage system comprising the following major parts; a storage vessel for storing a selected heat transfer fluid; heating elements for heating the heat transfer fluid; and external heat exchangers for transferring heat from heat transfer fluid to selected system fluids such as water for use in hot water systems and air heating systems
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.