Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4827749 | Methods and apparatus for reducing seizing in transverse rolling of seamless tube blanks | Hermann Moltner | 1989-05-09 |
| 4798071 | Seamless tube production | Hermann Moltner | 1989-01-17 |