Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5214890 | Office panel with lay-in communication cable capability | John Hellwig, Alexandre Coelho | 1993-06-01 |
| D326184 | Angled umbrella handle | Mark H. Sadowski | 1992-05-19 |
| 4979535 | Umbrella with detachable cover | Mark H. Sadowski | 1990-12-25 |