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Priority to PL20517478ApriorityCriticalpatent/PL109039B1/pl
Publication of PL205174A1publicationCriticalpatent/PL205174A1/pl
Publication of PL109039B1publicationCriticalpatent/PL109039B1/pl
PL20517478A1978-03-071978-03-07Method of passivating wires and tapes from ferritic chromium-aluminium steel,destined for resistance heating elements
PL109039B1
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