Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5707590 | Detergent container with thermo-chromatic level indicator | John E. Thomas, John E. McCall, Jr., Eric R. Balz | 1998-01-13 |
| 5385044 | Method of using a thermo-chromatic detergent level indicator | John E. Thomas, John E. McCall, Jr. | 1995-01-31 |