Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5947232 | Swing arm to prevent sway of elevator ropes | Boris G. Traktovenko | 1999-09-07 |
| 5861084 | System and method for minimizing horizontal vibration of elevator compensating ropes | Frederick H. Barker | 1999-01-19 |
| 4827635 | Bivalve mollusk dredge | — | 1989-05-09 |
| 4425723 | Clam dredge | — | 1984-01-17 |