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Application filed by Gerard Straszewski, Franciszek GruchalafiledCriticalGerard Straszewski
Priority to PL10565396UpriorityCriticalpatent/PL58766Y1/en
Publication of PL105653U1publicationCriticalpatent/PL105653U1/en
Publication of PL58766Y1publicationCriticalpatent/PL58766Y1/en