Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6238353 | Incentive spirometer | Lawrence A. Weinstein, Frederick M. Richards, James Wickstead, Brian K. Forbes | 2001-05-29 |
| 6191497 | Spirometer counter circuit | James Wickstead, Brian K. Forbes | 2001-02-20 |