Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856165 | Method for producing by welding a finned heat exchanger pipe | Gerhard Schiessl | 1989-08-15 |
| 4824149 | Generator set | — | 1989-04-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856165 | Method for producing by welding a finned heat exchanger pipe | Gerhard Schiessl | 1989-08-15 |
| 4824149 | Generator set | — | 1989-04-25 |