Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876946 | Flexible hose pump | Viktor V. Shishkin, Nikolai F. Kryazhevskikh | 1989-10-31 |
| 4841843 | Device for converting energy of fluid medium into mechanical work | Viktor V. Shishkin, Nikolai F. Kryazhevskikh | 1989-06-27 |
| 4839047 | Intermittent-action apparatus for filtering liquid | Viktor V. Shishkin, Nikolai F. Kryazhevskikh | 1989-06-13 |
| 4828796 | Method of protecting the internal surface of a pipeline against corrosion | Viktor V. Shishkin, Yaroslav P. Sushkov, Duglas Z. Serazetdinov, Evgeny G. Lukin, Viktoria I. Kapralova +5 more | 1989-05-09 |