Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311423 | Hole-drilling, extruding and thread-forming sheet screw | — | 1982-01-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311423 | Hole-drilling, extruding and thread-forming sheet screw | — | 1982-01-19 |