Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841991 | Intrauterine contraceptive device | Raisa V. Gainutdinova, Vera M. Petrova, Alevtina I. Blokhina, Boris S. Fridman | 1989-06-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841991 | Intrauterine contraceptive device | Raisa V. Gainutdinova, Vera M. Petrova, Alevtina I. Blokhina, Boris S. Fridman | 1989-06-27 |