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Application filed by Fryderyk Migaszewski, Wiktor Migaszewski, Franciszek Migaszewski, Stefan MigaszewskifiledCriticalFryderyk Migaszewski
Priority to PL391297ApriorityCriticalpatent/PL391297A1/pl
Publication of PL391297A1publicationCriticalpatent/PL391297A1/pl