Safety valve semi-automatic maneuvered thermoelectrically for two or more fires (Machine-translation by Google Translate, not legally binding)
ES219499A1
Improvements in the construction of pipe distributors (Machine-translation by Google Translate, not legally binding)
ES219419A1
Improvements in the construction of gas meters and analogue appliances (Machine-translation by Google Translate, not legally binding)
ES217575A1
Dry meter of gas maneuvered by sliding (Machine-translation by Google Translate, not legally binding)
ES210867A1
Improvements in the construction of tunnel spare parts for immediate piping for measuring and regulating instruments, pipeline or analogue appliances (Machine-translation by Google Translate, not legally binding)