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Application filed by Ipari Szerelveny & GepgyarfiledCriticalIpari Szerelveny & Gepgyar
Publication of ATA203579ApublicationCriticalpatent/ATA203579A/de
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Publication of AT359802BpublicationCriticalpatent/AT359802B/de
AT203579A1978-08-191979-03-19Vorrichtung zur bearbeitung der in form einer kugelzone ausgebildeten dichtflaeche einer klappenventilscheibe
AT359802B
(de)