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Application filed by Boehler & Co Ag GebfiledCriticalBoehler & Co Ag Geb
Application grantedgrantedCritical
Publication of AT190080BpublicationCriticalpatent/AT190080B/en
AT190080D1953-12-311953-12-31
Material for machine parts that have high external hardness, e.g. B. Glass hardness, and should have a tough core inside
AT190080B
(en)