Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D342242 | Combined keyboard support and wrist rest | H. Charles Hassel, Gregory DuVall | 1993-12-14 |
| D341053 | Back pillow with contour adjustment means | H. Charles Hassel, Don Westland | 1993-11-09 |
| 5219136 | Adjustable keyboard support | H. Charles Hassel | 1993-06-15 |