 | arc welding" (PDF). Archived from the original (PDF) on 2016-03-04. Nikołaj Benardos, Stanisław Olszewski, "Process of and apparatus for working metals... 3 KB (228 words) - 21:53, 17 October 2023 |
Congress number: 90-085465 copyright 1991 by American Welding Society Nikołaj Benardos, Stanisław Olszewski, "Process of and apparatus for working metals... 3 KB (341 words) - 02:49, 6 April 2024 |
 | Charles Scribner's Sons. 2008. Retrieved 9 October 2014. US 363,320, Nikołaj Benardos & Stanisław Olszewski, "Process of and apparatus for working metals... 67 KB (8,749 words) - 05:34, 4 April 2024 |
 | Encyclopedia, Article "Дуговой разряд" (eng. electric arc) US 363320, Benardos, Nikołaj & Olszewski, Stanisław, "Process of and apparatus for working metals... 27 KB (3,744 words) - 14:05, 4 April 2024 |