Improvement in the products of hot water production through gas heating. (Machine-translation by Google Translate, not legally binding)
ES315485A1
Improvements in water heating appliances using gas fueled burners
ES315484A1
Improvements in or relating to hot water producing appliances
ES287171A1
Improvements in central heating installations with domestic hot water circuit (Machine-translation by Google Translate, not legally binding)
ES284086A3
Improvements in the appliances of type of heaters for gas for water (Machine-translation by Google Translate, not legally binding)
ES284041A3
Improvements in gas burners for water heaters (Machine-translation by Google Translate, not legally binding)
ES284040A3
Improvements in closure keys for fluid, such as gas and water (Machine-translation by Google Translate, not legally binding)
ES241751A3
Improvements in the manufacture of heat bodies, especially for water heaters and gas bath heaters (Machine-translation by Google Translate, not legally binding)
ES241750A3
Improvements in gas lights ignition devices (Machine-translation by Google Translate, not legally binding)
ES241752A3
Gas admission maneuver device, especially for water heaters and bath heaters (Machine-translation by Google Translate, not legally binding)
ES241748A3
Improvements in instant gas water heaters (Machine-translation by Google Translate, not legally binding)
ES241749A3
Improvements in instant gas water heaters (Machine-translation by Google Translate, not legally binding)
