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DE821991C
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Method and device for achieving the largest flame lengths and for regulating the same, in particular for industrial winners
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DE882529C
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Stacking process for normal and bright annealed sheets
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DE719377C
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Annealing furnace with heating pipes working with a protective gas atmosphere
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DE513232C
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Gas generating furnace
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DE486443C
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Gas generating furnace with optional heating of part of the degassing rooms directly or through waste heat
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DE476582C
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Combined immersion and dry seal for the bottom closure of standing retorts or chambers
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DE462290C
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Device for protecting the lower part of vertical chambers with wet closures
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