Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613631 | Method for producing a lengthwise welded metal tube | Gerhard Ziemek, Harry Staschewski | 1997-03-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5613631 | Method for producing a lengthwise welded metal tube | Gerhard Ziemek, Harry Staschewski | 1997-03-25 |