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Application filed by Ryszard Gorka, Jerzy MajchrzakfiledCriticalRyszard Gorka
Priority to PL29500892ApriorityCriticalpatent/PL168599B1/en
Publication of PL295008A1publicationCriticalpatent/PL295008A1/en
Publication of PL168599B1publicationCriticalpatent/PL168599B1/en