Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879172 | Subtratum for soil-free cultivation | — | 1989-11-07 |
| 4867779 | Nutritive glasses for agriculture | Guy Matzen, Denise Blanc, Maryse Montarone | 1989-09-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879172 | Subtratum for soil-free cultivation | — | 1989-11-07 |
| 4867779 | Nutritive glasses for agriculture | Guy Matzen, Denise Blanc, Maryse Montarone | 1989-09-19 |