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FEDELER EDUARD T
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FEDELER EDUARD T
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Priority to ES0293701ApriorityCriticalpatent/ES293701A1/en
Publication of ES293701A1publicationCriticalpatent/ES293701A1/en
An electrical system for heating hot water heating boilers, characterized by the incorporation inside the boiler, in the hearth thereof, surrounded by refractory, of one or more heating units by resistance consisting each of a double helix of wound yarn spiral, with both propellers arranged on the same tube of refractory material juxtaposed, these resistors can be connected either in series, or in parallel coupling. (Machine-translation by Google Translate, not legally binding)
ES0293701A1963-11-201963-11-20An electrical system for heating heating boilers (Machine-translation by Google Translate, not legally binding)
ExpiredES293701A1
(en)
Improvements in gas heating apparatus, in particular of the generation of water and bath heaters. (Machine-translation by Google Translate, not legally binding)
Improvements in the manufacture of heating appliances with filiforme electrical resistance. (Machine-translation by Google Translate, not legally binding)
Improvements in the construction of devices for the additional warm up of a water heater with gases in smoke. (Machine-translation by Google Translate, not legally binding)
A regulator of the water temperature in the deposits of the machines intended for the preparation of infusions. (Machine-translation by Google Translate, not legally binding)