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Platte 102-X. Ein schwerer Gasofen für Kessel, Kessel, Brennblasen und...
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Tafel 119-X. Kleiner Autoklav in einem Gasofen.
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Platte 102-X. Gasofen mit Töpfen zum Schmelzen von Metall.
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Platte 102-X. Gasofen zum Heizen von Kesseln und Kesseln.
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