| F27B | Industrieöfen, Schachtöfen, Brennöfen, Retorten allgemein; offene Sinterapparate oder ähnliche Vorrichtungen (Feuerungsanlagen F23; elektrische Heizvorrichtungen H05B) | FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS (combustion apparatus F23; electric heating H05B) |
| F27B 3/00 | Herdöfen, z.B. Flammöfen (F27B 9/00-F27B 15/00 , F27B 21/00 haben Vorrang); Lichtbogenöfen [1, 4, 2006.01] | Hearth-type furnaces, e.g. of reverberatory type (F27B 9/00-F27B 15/00, F27B 21/00 take precedence); Electric arc furnaces [1, 4, 2006.01] |
| F27B 3/08 | . | elektrisch beheizt, z.B. Lichtbogenöfen, mit oder ohne andere Heizquelle [1, 2006.01] |
| . | heated electrically, e.g. electric arc furnaces, with or without any other source of heat [1, 2006.01] |
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