1. Dvirna, O. (2021). Method for Finishing Welding Surfaces and Tool for Carrying Out this Method. (EP 3875199A1), Application Number.
2. Dvirna, O. (2020). Method for Finishing Welding Surfaces and a Tool for Carrying Out this Method. (P.433166), Application Number.
3. Dvirna, O. (2021). Cutting Tool for Post Weld Surface Finishing. (No 146641), Utility model.
4. Dvirna, O. (2021). Method of Post Weld Surface Finishing. (No 146640), Utility model.
5. Szal, A., Orzech, K., Klich, J., Szwed, W., Kalisz, K., and Bodynek, P. (1991). Method of Grinding Longitudinal Welds on External Cargs and Apparatus Therefor. (166176), Patent Number.