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Application filed by Ewald Wendler, Egon EtzoldfiledCriticalEwald Wendler
Priority to DD19919877ApriorityCriticalpatent/DD132473B1/de
Publication of DD132473A1publicationCriticalpatent/DD132473A1/de
Publication of DD132473B1publicationCriticalpatent/DD132473B1/de
DD19919877A1977-05-311977-05-31Verfahren zur innenentgratung von bohrstangen oder dickwandigen rohren waehrend des abbrennstumpfschweissprozesses
DD132473B1
(de)