Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4269552 | Apparatus for removing a welding bulge from resistance welded pipes | Mikhail R. Unigovsky, Evgeny V. Rulevsky, Georgy A. Arendt, Vladimir G. Chirskov, Julian K. Konovalov +4 more | 1981-05-26 |
| 4231694 | Apparatus for removing a welding bulge from pipes | Mikhail R. Unigovsky, Evgeny V. Rulevsky, Fedor I. Sapa, Alexei T. Parkhomchuk, Arnold S. Yampolsky +4 more | 1980-11-04 |