DE708368C
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Kettle for boiling and evaporating liquids
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DE706691C
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Kettle for boiling and evaporating liquids
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DE737532C
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Process for the denitration of waste acids containing nitric acid, sulfuric acid and organic substances
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DE728713C
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Process for the dentination of waste acids containing nitric acid, sulfuric acid and organic substances
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DE673960C
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Process for the purification of distillation gases of solid fuels and for the recovery of by-products
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DE673970C
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Process for the production of alkali nitrates
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Production of nitrogen oxides from ammonia
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Production of Ammond double or mixed salts
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DE631488C
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Process and device for the production of Ammond double or mixed salts
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