Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865673 | Method of applying a protective coating to the inner surface of a pipeline and device for carrying out the method | Viktor V. Shishkin, Nikolai F. Kryazhevskikh, Viktor N. Oleinik, Yaroslav P. Sushkov, Evgeny G. Lukin +4 more | 1989-09-12 |
| 4818298 | Method of removing deposits from the inside walls of a pipeline and applying protective coatings thereto | Viktor V. Shishkin, Dmitry N. Cherebedov, Nikolai F. Kryazhevskikh, Valery P. Panchenko, Yaroslav P. Sushkov +4 more | 1989-04-04 |