Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4764237 | Method of coating the internal surface of a pipeline with a cement-sand mortar and a device for effecting same | Viktor V. Shishkin, Nikolai F. Kryazhevskikh, Viktor N. Oleinik, Vladimir L. Medunitsa | 1988-08-16 |
| 4745879 | Device for coating the internal surface of a pipeline with a cement-sand mixture | Viktor V. Shishkin, Vladimir L. Medunitsa | 1988-05-24 |
| 4699078 | Apparatus for repairing a pipeline | Viktor V. Shishkin, Vladimir L. Medunitsa | 1987-10-13 |