Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4203458 | Negative gravity swivel device | Alfred J. Barrett | 1980-05-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4203458 | Negative gravity swivel device | Alfred J. Barrett | 1980-05-20 |