Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793655 | Multi-position convertible therapeutic chair | Andrew M. Kvalheim | 1988-12-27 |
| 4765684 | Multi-purpose chair with retractable knee rest | Andrew M. Kvalheim | 1988-08-23 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4793655 | Multi-position convertible therapeutic chair | Andrew M. Kvalheim | 1988-12-27 |
| 4765684 | Multi-purpose chair with retractable knee rest | Andrew M. Kvalheim | 1988-08-23 |