Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6203648 | Method for manufacturing paint roller | William W. Barton, Bruce C. Polzin, Kenneth L. Shehow | 2001-03-20 |
| 5614047 | Method of manufacturing paint rollers | — | 1997-03-25 |
| 5397414 | Method and apparatus for manufacturing paint roller and product produced thereby | Bruce C. Polzin, Kenneth L. Shehow | 1995-03-14 |
| 5137595 | Paint roller manufacturing apparatus | — | 1992-08-11 |
| 4692975 | Paint roller | — | 1987-09-15 |