Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6101662 | Roller having slip-on cage for paint roller cover | Bruce C. Polzin, Robert A. Shaffer, Rand J. Krikorian, William W. Barton | 2000-08-15 |
| 5979009 | Roller having slip-on cage for paint roller cover | Bruce C. Polzin, Robert A. Shaffer, Rand J. Krikorian, William W. Barton, Anthony W. Gilbert | 1999-11-09 |
| 5584092 | Roller having slip-on cage for paint roller cover | Bruce C. Polzin, Robert A. Shaffer, Rand J. Krikorian, William W. Barton | 1996-12-17 |