Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4768520 | Peak flow and pulmonary incentive meter | Joseph M. Valdespino, William M. Hobby | 1988-09-06 |
| 4424058 | Drainage control method and apparatus | Robert L. Parsons, Joseph M. Valdespino, Allen K. Holcomb, William M. Hobby | 1984-01-03 |