Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6539999 | Apparatus and method for making variable paint roller covers | Bruce C. Polzin | 2003-04-01 |
| 5468207 | Method and apparatus of manufacturing a paint roller | Ronald R. Delo, Gerald D. VanZeeland | 1995-11-21 |
| 5206968 | Paint roller | Ronald R. Delo, Gerald D. VanZeeland | 1993-05-04 |