Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841991 | Intrauterine contraceptive device | Vera M. Petrova, Alevtina I. Blokhina, Boris S. Fridman, Pinkhos U. Gamer | 1989-06-27 |
| 4830025 | Intrauterine contraceptive device | Boris A. Jurov, Bentsian M. Mazo, Vera M. Petrova | 1989-05-16 |
| 4807610 | Intrauterine contraceptive device | Boris A. Jurov, Bentsian M. Mazo, Vera M. Petrova | 1989-02-28 |