Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4573967 | Vacuum vial infusion system | William W. Hargrove, Dale C. Harris, Charles R. Sperry | 1986-03-04 |
| 4534758 | Controlled release infusion system | William W. Hargrove, Dale C. Harris, Charles R. Sperry | 1985-08-13 |