Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739347 | System for spin-cleaning closed-end filter cartridges | Joseph D. Robertson | 2004-05-25 |
| 6681525 | Handicapped train-station gate | — | 2004-01-27 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739347 | System for spin-cleaning closed-end filter cartridges | Joseph D. Robertson | 2004-05-25 |
| 6681525 | Handicapped train-station gate | — | 2004-01-27 |