Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796693 | Finned tube with indented groove base and method of forming same | Hans-Werner Kastner, Manfred Hage | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796693 | Finned tube with indented groove base and method of forming same | Hans-Werner Kastner, Manfred Hage | 1989-01-10 |