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Priority to ES203781ApriorityCriticalpatent/ES203781A1/en
Publication of ES203781A1publicationCriticalpatent/ES203781A1/en
Improvements in electric water heaters, characterized in that the passage of water through the heater takes place along a helical conduit between the outer wall of an inner cylindrical heating chamber and the outer wall of the water chamber . (Machine-translation by Google Translate, not legally binding)
ES203781A1952-05-301952-05-30Improvements in electrical water heaters (Machine-translation by Google Translate, not legally binding)
ExpiredES203781A1
(en)
Electric circulation heater, for heating water or other liquids in domestic and industrial installations. (Machine-translation by Google Translate, not legally binding)