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DE2345261A1
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HIGH PERFORMANCE FITTINGS FOR CHEMICAL APPARATUS
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DE2151129A1
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Fixing device for inner tubes in tube bundle heat exchangers
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DE2132992A1
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Valve for mass transfer in columns
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DE2060285A1
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Measuring and control device
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DE2060178A1
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High performance exchange packing for columns
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DE2060034A1
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Shielded arc welding
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DE1963996A1
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Device for touching tube plates to form tube bundles
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DE1957509A1
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Welding aid for use in constructing cylindrical - vessels etc
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DE1957508A1
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Welding herd control
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DE1810103A1
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Cutter block for latex bales
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DE1792558A1
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Metal gasket
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DE1767237A1
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Device for carrying out liquid reactions
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DE1667347A1
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Flap base for mass transfer columns
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DE1615505A1
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Method for controlling the welding head to the center of the welding gap and device for carrying out the method
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DE1600968A1
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Valve for intermediate floors in mass transfer columns
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DE1565923A1
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Welding pool protection for submerged arc welding of round and longitudinal seams
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DE1565179A1
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Fully automatic pipe welding machine
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DE1139597B
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Process for the continuous extraction of oils and fats from oils and fruits
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DE1099547B
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Process for removing neutral oils and fatty acids from crude phenols
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