Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7878347 | Lifting apparatus with compensation means | — | 2011-02-01 |
| 6394384 | Multi-roll media supporting and supply system | David A. Bartman | 2002-05-28 |
| 5439303 | Split-spline hub and latch mechanism | — | 1995-08-08 |
| 5433540 | Combined spool retainer and installation device | — | 1995-07-18 |