Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5871695 | Diagnostic strips | Serguei V. Khartchenko, Nadejda P. Khartchenko, Alina S. Khartchenko | 1999-02-16 |
| 5464608 | Composition for the cleaning of teeth and the prophylaxis of caries | Serguei V. Khartchenko, Nadejda P. Khartchenko, Alina S. Khartchenko | 1995-11-07 |