Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4781506 | Self-drilling screw | David J. Roberts | 1988-11-01 |
| 4347027 | Drill screw | — | 1982-08-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4781506 | Self-drilling screw | David J. Roberts | 1988-11-01 |
| 4347027 | Drill screw | — | 1982-08-31 |