Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886555 | Solar cell | Karl-Gerhard Hackstein | 1989-12-12 |
| 4828628 | Solar cell | Karl-Gerhard Hackstein | 1989-05-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886555 | Solar cell | Karl-Gerhard Hackstein | 1989-12-12 |
| 4828628 | Solar cell | Karl-Gerhard Hackstein | 1989-05-09 |