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DD278843A1
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Process for corrosion protection of the internal welding seams of pipes from cement multi-stainless steel tubes
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DD278630A1
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Arrangement for the axial anchoring of a socket connection
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DD276715A1
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Power stock wreath
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DD275904A1
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Arrangement for leakage monitoring of pipes
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DD274862A1
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Device for closing pipe ends
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DD276590A3
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Device for compressed air radiation according to the injector principle
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DD275987A3
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Device for pneumatic spraying of pasteese substances
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DD261315A1
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Method for producing a nonloadable sealant pipe connection
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DD256353A1
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Method for producing coatings from polyaethylene on compound piping components with cement multistal cladding
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DD254154A1
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Method for controlling a device for cutting and welding pipes
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