Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874496 | Device for silverizing drinking water | Alexander Chak | 1989-10-17 |
| 4839498 | Electrically heated fish tank unit | — | 1989-06-13 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874496 | Device for silverizing drinking water | Alexander Chak | 1989-10-17 |
| 4839498 | Electrically heated fish tank unit | — | 1989-06-13 |