Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815632 | Liquid dosing device with digital display | Graham Ball, William B. Hart | 1989-03-28 |
| 4760939 | Liquid dosing device with digital display | Graham Ball, William B. Hart | 1988-08-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815632 | Liquid dosing device with digital display | Graham Ball, William B. Hart | 1989-03-28 |
| 4760939 | Liquid dosing device with digital display | Graham Ball, William B. Hart | 1988-08-02 |