The article presents the results of theoretical and experimental developments regarding the marking of scans and patterns of fittings of the ventilation system, provided that the unification of installation and procurement work.
If you analyze the city’s architecture at the turn of the 19th and 20th centuries, you will be surprised by how many public and residential buildings were constructed, and often designed, by Levynsky company. Levynsky was a respected philanthropist, an active member of cultural and technical societies, among others, of the Polytechnic School Society, the Society of Workers and Industrialists, and a participant in Ukrainian social life–for instance, an activist for the Prosvita Society.