Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811889 | Method and apparatus for the manufacture of powder-filled steel tube from steel strip | Arnold J. G. Dackus | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4811889 | Method and apparatus for the manufacture of powder-filled steel tube from steel strip | Arnold J. G. Dackus | 1989-03-14 |