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DD220592A1
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Method for producing iron oxygen-containing glass
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DD220103A1
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Device for heating stroemender gases, especially air
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DD217201A2
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Glass melting tub with recuperative air prevention
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DD217789A1
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Homogenisator for glass melts
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DD218160A1
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Solar panel
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DD214837A1
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Machine for manufacturing branches from glass tubes
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DD218082A1
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Method and melting oven for producing glass, enamel or similar silicative substances
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DD214598A1
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Method for regulating the melting and processing in glass melting pans
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DD216486A1
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Oven for melting silicatic fabrics, in particular grundemail
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DD212030A1
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Method for controlling the thread insert for glass melting pans
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DD212031A1
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Method for regulating the temperature of a melting tub
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DD212032A1
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Method and device for mounting rotational symmetrical glass parts
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DD211107A1
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Melting tub for melting enamel, glass or similar fabrics
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DD210742A1
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Heat exchanger
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DD210747A1
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Device for determining the cross-dimensioning of half tool
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DD203899A1
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homogenizer
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