Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4930547 | Powder-filled welded steel tube and method for the continuous manufacture thereof | — | 1990-06-05 |
| 4811889 | Method and apparatus for the manufacture of powder-filled steel tube from steel strip | Cornelis G. J. Brasser | 1989-03-14 |