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The Italian FACTORY RADIOELECTRIC VALVES (FIVRE) started the regular production of thermal valves at the Pavia plant. Fivre was the largest all-Italian company, founded in 1932 by Magneti Marelli to produce vacuum tubes under licence for the American RCA group.
By installing, in addition to the conventional types, American factory machines with Italian manpower (coming from a light bulb factory) and with the assistance of American company technicians, a brand new series of 11 valves corresponding to American ones was produced and launched: 24A, 27, 35, 45, 55, 56, 57, 58 and 82 mercury vapor rectifiers.
An agreement was also made for the marketing of RADIOTRON and CUNNINGHAM and TUNGSRAM valves.
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